402131034 has 128 divisors (see below), whose sum is σ = 979776000. Its totient is φ = 121904640.

The previous prime is 402131021. The next prime is 402131053. The reversal of 402131034 is 430131204.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 402130998 and 402131016.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2698792 + ... + 2698940.

It is an arithmetic number, because the mean of its divisors is an integer number (7654500).

Almost surely, 2^402131034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402131034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489888000).

402131034 is an abundant number, since it is smaller than the sum of its proper divisors (577644966).

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

402131034 is a wasteful number, since it uses less digits than its factorization.

402131034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 402131034 is about 20053.2050804853. The cubic root of 402131034 is about 738.1124489899.

Adding to 402131034 its reverse (430131204), we get a palindrome (832262238).

The spelling of 402131034 in words is "four hundred two million, one hundred thirty-one thousand, thirty-four".