40040100434 has 4 divisors (see below), whose sum is σ = 60060150654. Its totient is φ = 20020050216.

The previous prime is 40040100427. The next prime is 40040100479. The reversal of 40040100434 is 43400104004.

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., 40018802209 + 21298225 = 200047^2 + 4615^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010025107 + ... + 10010025110.

Almost surely, 2^40040100434 is an apocalyptic number.

40040100434 is a deficient number, since it is larger than the sum of its proper divisors (20020050220).

40040100434 is a wasteful number, since it uses less digits than its factorization.

40040100434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20020050219.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 40040100434 its reverse (43400104004), we get a palindrome (83440204438).

The spelling of 40040100434 in words is "forty billion, forty million, one hundred thousand, four hundred thirty-four".