400342002 has 16 divisors (see below), whose sum is σ = 835496640. Its totient is φ = 127645232.

The previous prime is 400341983. The next prime is 400342003. The reversal of 400342002 is 200243004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (400342003) 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, 1450377 + ... + 1450652.

It is an arithmetic number, because the mean of its divisors is an integer number (52218540).

Almost surely, 2^400342002 is an apocalyptic number.

400342002 is an abundant number, since it is smaller than the sum of its proper divisors (435154638).

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

400342002 is a wasteful number, since it uses less digits than its factorization.

400342002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2901057.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 400342002 is about 20008.5482231970. The cubic root of 400342002 is about 737.0162309321.

Adding to 400342002 its reverse (200243004), we get a palindrome (600585006).

The spelling of 400342002 in words is "four hundred million, three hundred forty-two thousand, two".