40400213234 has 4 divisors (see below), whose sum is σ = 60600319854. Its totient is φ = 20200106616.

The previous prime is 40400213213. The next prime is 40400213327. The reversal of 40400213234 is 43231200404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40382108209 + 18105025 = 200953^2 + 4255^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100053307 + ... + 10100053310.

Almost surely, 2^40400213234 is an apocalyptic number.

40400213234 is a deficient number, since it is larger than the sum of its proper divisors (20200106620).

40400213234 is a wasteful number, since it uses less digits than its factorization.

40400213234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20200106619.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 40400213234 its reverse (43231200404), we get a palindrome (83631413638).

The spelling of 40400213234 in words is "forty billion, four hundred million, two hundred thirteen thousand, two hundred thirty-four".