42402744 has 64 divisors (see below), whose sum is σ = 118932000. Its totient is φ = 13996800.

The previous prime is 42402719. The next prime is 42402797. The reversal of 42402744 is 44720424.

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

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 22644 + ... + 24444.

Almost surely, 2^42402744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42402744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59466000).

42402744 is an abundant number, since it is smaller than the sum of its proper divisors (76529256).

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

42402744 is a wasteful number, since it uses less digits than its factorization.

42402744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925 (or 1915 counting only the distinct ones).

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

The square root of 42402744 is about 6511.7389382560. The cubic root of 42402744 is about 348.7102024190.

The spelling of 42402744 in words is "forty-two million, four hundred two thousand, seven hundred forty-four".