402122040 has 64 divisors (see below), whose sum is σ = 1208057760. Its totient is φ = 107082240.

The previous prime is 402122027. The next prime is 402122051. The reversal of 402122040 is 40221204.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103330 + ... + 107150.

Almost surely, 2^402122040 is an apocalyptic number.

402122040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402122040 is an abundant number, since it is smaller than the sum of its proper divisors (805935720).

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

402122040 is a wasteful number, since it uses less digits than its factorization.

402122040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4712 (or 4708 counting only the distinct ones).

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

The square root of 402122040 is about 20052.9808258024. The cubic root of 402122040 is about 738.1069461129.

Adding to 402122040 its reverse (40221204), we get a palindrome (442343244).

The spelling of 402122040 in words is "four hundred two million, one hundred twenty-two thousand, forty".