402013340 has 24 divisors (see below), whose sum is σ = 849825312. Its totient is φ = 159739200.

The previous prime is 402013319. The next prime is 402013349. The reversal of 402013340 is 43310204.

It is a super-2 number, since 2×402013340² = 323229451075911200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402013349) 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, 63539 + ... + 69578.

It is an arithmetic number, because the mean of its divisors is an integer number (35409388).

Almost surely, 2^402013340 is an apocalyptic number.

It is an amenable number.

402013340 is an abundant number, since it is smaller than the sum of its proper divisors (447811972).

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

402013340 is a wasteful number, since it uses less digits than its factorization.

402013340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133277 (or 133275 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 402013340 is about 20050.2703223672. The cubic root of 402013340 is about 738.0404327600.

Adding to 402013340 its reverse (43310204), we get a palindrome (445323544).

The spelling of 402013340 in words is "four hundred two million, thirteen thousand, three hundred forty".