42140736 has 140 divisors (see below), whose sum is σ = 136458960. Its totient is φ = 12752640.

The previous prime is 42140729. The next prime is 42140767. The reversal of 42140736 is 63704124.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 56655 + ... + 57393.

Almost surely, 2^42140736 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 42140736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68229480).

42140736 is an abundant number, since it is smaller than the sum of its proper divisors (94318224).

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

42140736 is a wasteful number, since it uses less digits than its factorization.

42140736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 42140736 is about 6491.5896358288. The cubic root of 42140736 is about 347.9904872548.

The spelling of 42140736 in words is "forty-two million, one hundred forty thousand, seven hundred thirty-six".