402002002124 has 12 divisors (see below), whose sum is σ = 703716258504. Its totient is φ = 200940213984.

The previous prime is 402002002117. The next prime is 402002002169. The reversal of 402002002124 is 421200200204.

It is a happy number.

It is a super-2 number, since 2×402002002124² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15181889 + ... + 15208344.

It is an arithmetic number, because the mean of its divisors is an integer number (58643021542).

Almost surely, 2^402002002124 is an apocalyptic number.

It is an amenable number.

402002002124 is a deficient number, since it is larger than the sum of its proper divisors (301714256380).

402002002124 is a wasteful number, since it uses less digits than its factorization.

402002002124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30393544 (or 30393542 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 402002002124 its reverse (421200200204), we get a palindrome (823202202328).

The spelling of 402002002124 in words is "four hundred two billion, two million, two thousand, one hundred twenty-four".