42744402 has 16 divisors (see below), whose sum is σ = 94987680. Its totient is φ = 14248116.

The previous prime is 42744389. The next prime is 42744407. The reversal of 42744402 is 20444724.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42744407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395728 + ... + 395835.

It is an arithmetic number, because the mean of its divisors is an integer number (5936730).

Almost surely, 2^42744402 is an apocalyptic number.

42744402 is an abundant number, since it is smaller than the sum of its proper divisors (52243278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42744402 is a wasteful number, since it uses less digits than its factorization.

42744402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791574 (or 791568 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 42744402 is about 6537.9203115364. The cubic root of 42744402 is about 349.6442698609.

The spelling of 42744402 in words is "forty-two million, seven hundred forty-four thousand, four hundred two".