402124156140 has 48 divisors (see below), whose sum is σ = 1286797300992. Its totient is φ = 91914092736.

The previous prime is 402124156121. The next prime is 402124156153. The reversal of 402124156140 is 41651421204.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 402124156098 and 402124156107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478718814 + ... + 478719653.

It is an arithmetic number, because the mean of its divisors is an integer number (26808277104).

Almost surely, 2^402124156140 is an apocalyptic number.

It is an amenable number.

402124156140 is an abundant number, since it is smaller than the sum of its proper divisors (884673144852).

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

402124156140 is a wasteful number, since it uses less digits than its factorization.

402124156140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957438486 (or 957438484 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 402124156140 its reverse (41651421204), we get a palindrome (443775577344).

The spelling of 402124156140 in words is "four hundred two billion, one hundred twenty-four million, one hundred fifty-six thousand, one hundred forty".