402102124 has 24 divisors (see below), whose sum is σ = 710473680. Its totient is φ = 199117056.

The previous prime is 402102121. The next prime is 402102133. The reversal of 402102124 is 421201204.

It is a super-2 number, since 2×402102124² = 323372236250622752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402102098 and 402102107.

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, 442879 + ... + 443785.

It is an arithmetic number, because the mean of its divisors is an integer number (29603070).

Almost surely, 2^402102124 is an apocalyptic number.

It is an amenable number.

402102124 is a deficient number, since it is larger than the sum of its proper divisors (308371556).

402102124 is a wasteful number, since it uses less digits than its factorization.

402102124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857 (or 1855 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 402102124 is about 20052.4842351266. The cubic root of 402102124 is about 738.0947604420.

Adding to 402102124 its reverse (421201204), we get a palindrome (823303328).

The spelling of 402102124 in words is "four hundred two million, one hundred two thousand, one hundred twenty-four".