40220402 has 8 divisors (see below), whose sum is σ = 63879516. Its totient is φ = 18927232.

The previous prime is 40220393. The next prime is 40220407. The reversal of 40220402 is 20402204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38056561 + 2163841 = 6169^2 + 1471^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40220407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591443 + ... + 591510.

Almost surely, 2^40220402 is an apocalyptic number.

40220402 is a deficient number, since it is larger than the sum of its proper divisors (23659114).

40220402 is a wasteful number, since it uses less digits than its factorization.

40220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182972.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 40220402 is about 6341.9556920559. The cubic root of 40220402 is about 342.6221760298.

Adding to 40220402 its reverse (20402204), we get a palindrome (60622606).

The spelling of 40220402 in words is "forty million, two hundred twenty thousand, four hundred two".