40432402 has 4 divisors (see below), whose sum is σ = 60648606. Its totient is φ = 20216200.

The previous prime is 40432397. The next prime is 40432489. The reversal of 40432402 is 20423404.

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., 38303721 + 2128681 = 6189^2 + 1459^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40432402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10108099 + ... + 10108102.

Almost surely, 2^40432402 is an apocalyptic number.

40432402 is a deficient number, since it is larger than the sum of its proper divisors (20216204).

40432402 is a wasteful number, since it uses less digits than its factorization.

40432402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20216203.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40432402 is about 6358.6478122318. The cubic root of 40432402 is about 343.2231036676.

Adding to 40432402 its reverse (20423404), we get a palindrome (60855806).

The spelling of 40432402 in words is "forty million, four hundred thirty-two thousand, four hundred two".