42244402 has 4 divisors (see below), whose sum is σ = 63366606. Its totient is φ = 21122200.

The previous prime is 42244393. The next prime is 42244421. The reversal of 42244402 is 20444224.

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., 39551521 + 2692881 = 6289^2 + 1641^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561099 + ... + 10561102.

Almost surely, 2^42244402 is an apocalyptic number.

42244402 is a deficient number, since it is larger than the sum of its proper divisors (21122204).

42244402 is a wasteful number, since it uses less digits than its factorization.

42244402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21122203.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 42244402 is about 6499.5693703506. The cubic root of 42244402 is about 348.2756052062.

Adding to 42244402 its reverse (20444224), we get a palindrome (62688626).

The spelling of 42244402 in words is "forty-two million, two hundred forty-four thousand, four hundred two".