122402040 has 128 divisors (see below), whose sum is σ = 402408000. Its totient is φ = 29646848.

The previous prime is 122402039. The next prime is 122402081. The reversal of 122402040 is 40204221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58126 + ... + 60194.

Almost surely, 2^122402040 is an apocalyptic number.

122402040 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 122402040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201204000).

122402040 is an abundant number, since it is smaller than the sum of its proper divisors (280005960).

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

122402040 is a wasteful number, since it uses less digits than its factorization.

122402040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129 (or 2125 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 122402040 is about 11063.5455438119. The cubic root of 122402040 is about 496.5117744906.

Adding to 122402040 its reverse (40204221), we get a palindrome (162606261).

The spelling of 122402040 in words is "one hundred twenty-two million, four hundred two thousand, forty".