42003742 has 16 divisors (see below), whose sum is σ = 69704064. Its totient is φ = 18823000.

The previous prime is 42003739. The next prime is 42003751. The reversal of 42003742 is 24730024.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11884 + ... + 15007.

It is an arithmetic number, because the mean of its divisors is an integer number (4356504).

Almost surely, 2^42003742 is an apocalyptic number.

42003742 is a deficient number, since it is larger than the sum of its proper divisors (27700322).

42003742 is a wasteful number, since it uses less digits than its factorization.

42003742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26975.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 42003742 is about 6481.0293935454. The cubic root of 42003742 is about 347.6129874295.

Adding to 42003742 its reverse (24730024), we get a palindrome (66733766).

The spelling of 42003742 in words is "forty-two million, three thousand, seven hundred forty-two".