402030140 has 12 divisors (see below), whose sum is σ = 844263336. Its totient is φ = 160812048.

The previous prime is 402030113. The next prime is 402030143. The reversal of 402030140 is 41030204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402030143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10050734 + ... + 10050773.

It is an arithmetic number, because the mean of its divisors is an integer number (70355278).

Almost surely, 2^402030140 is an apocalyptic number.

It is an amenable number.

402030140 is an abundant number, since it is smaller than the sum of its proper divisors (442233196).

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

402030140 is a wasteful number, since it uses less digits than its factorization.

402030140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20101516 (or 20101514 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 402030140 is about 20050.6892649604. The cubic root of 402030140 is about 738.0507134359.

Adding to 402030140 its reverse (41030204), we get a palindrome (443060344).

The spelling of 402030140 in words is "four hundred two million, thirty thousand, one hundred forty".