400346342 has 8 divisors (see below), whose sum is σ = 655112232. Its totient is φ = 181975600.

The previous prime is 400346339. The next prime is 400346407. The reversal of 400346342 is 243643004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9098759 + ... + 9098802.

It is an arithmetic number, because the mean of its divisors is an integer number (81889029).

Almost surely, 2^400346342 is an apocalyptic number.

400346342 is a deficient number, since it is larger than the sum of its proper divisors (254765890).

400346342 is a wasteful number, since it uses less digits than its factorization.

400346342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18197574.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 400346342 is about 20008.6566765488. The cubic root of 400346342 is about 737.0188941874.

Adding to 400346342 its reverse (243643004), we get a palindrome (643989346).

The spelling of 400346342 in words is "four hundred million, three hundred forty-six thousand, three hundred forty-two".