42142744 has 24 divisors (see below), whose sum is σ = 91919340. Its totient is φ = 18061008.

The previous prime is 42142729. The next prime is 42142753. The reversal of 42142744 is 44724124.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53362 + ... + 54145.

Almost surely, 2^42142744 is an apocalyptic number.

It is an amenable number.

42142744 is an abundant number, since it is smaller than the sum of its proper divisors (49776596).

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

42142744 is a wasteful number, since it uses less digits than its factorization.

42142744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107527 (or 107516 counting only the distinct ones).

The product of its digits is 7168, while the sum is 28.

The square root of 42142744 is about 6491.7442956420. The cubic root of 42142744 is about 347.9960143992.

Adding to 42142744 its reverse (44724124), we get a palindrome (86866868).

The spelling of 42142744 in words is "forty-two million, one hundred forty-two thousand, seven hundred forty-four".