121421000 has 32 divisors (see below), whose sum is σ = 284127480. Its totient is φ = 48568000.

The previous prime is 121420993. The next prime is 121421023. The reversal of 121421000 is 124121.

It can be written as a sum of positive squares in 4 ways, for example, as 10876804 + 110544196 = 3298^2 + 10514^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59711 + ... + 61710.

Almost surely, 2^121421000 is an apocalyptic number.

121421000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121421000 is an abundant number, since it is smaller than the sum of its proper divisors (162706480).

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

121421000 is a wasteful number, since it uses less digits than its factorization.

121421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121442 (or 121428 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 121421000 is about 11019.1197470578. The cubic root of 121421000 is about 495.1817174540.

Adding to 121421000 its reverse (124121), we get a palindrome (121545121).

The spelling of 121421000 in words is "one hundred twenty-one million, four hundred twenty-one thousand".