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122421000 = 23353134373
BaseRepresentation
bin1110100101111…
…11111100001000
322112100122001010
413102333330020
5222314433000
620051523520
73014363352
oct722777410
9275318033
10122421000
1163115789
1234bb95a0
131c493b80
141238a0d2
15ab32d50
hex74bff08

122421000 has 256 divisors, whose sum is σ = 426666240. Its totient is φ = 29030400.

The previous prime is 122420999. The next prime is 122421017. The reversal of 122421000 is 124221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1676964 + ... + 1677036.

It is an arithmetic number, because the mean of its divisors is an integer number (1666665).

Almost surely, 2122421000 is an apocalyptic number.

122421000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213333120).

122421000 is an abundant number, since it is smaller than the sum of its proper divisors (304245240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122421000 is a wasteful number, since it uses less digits than its factorization.

122421000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 122421000 is about 11064.4023788002. The cubic root of 122421000 is about 496.5374096222.

Adding to 122421000 its reverse (124221), we get a palindrome (122545221).

The spelling of 122421000 in words is "one hundred twenty-two million, four hundred twenty-one thousand".