402102122 has 16 divisors (see below), whose sum is σ = 639031680. Its totient is φ = 189106368.

The previous prime is 402102121. The next prime is 402102133. The reversal of 402102122 is 221201204.

It is a super-2 number, since 2×402102122² = 323372233033805768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402102097 and 402102106.

It is not an unprimeable number, because it can be changed into a prime (402102121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77279 + ... + 82317.

It is an arithmetic number, because the mean of its divisors is an integer number (39939480).

Almost surely, 2^402102122 is an apocalyptic number.

402102122 is a deficient number, since it is larger than the sum of its proper divisors (236929558).

402102122 is a wasteful number, since it uses less digits than its factorization.

402102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7405.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 402102122 is about 20052.4841852574. The cubic root of 402102122 is about 738.0947592182.

Adding to 402102122 its reverse (221201204), we get a palindrome (623303326).

The spelling of 402102122 in words is "four hundred two million, one hundred two thousand, one hundred twenty-two".