42229724 has 6 divisors (see below), whose sum is σ = 73902024. Its totient is φ = 21114860.

The previous prime is 42229709. The next prime is 42229739. The reversal of 42229724 is 42792224.

It is an interprime number because it is at equal distance from previous prime (42229709) and next prime (42229739).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278712 + ... + 5278719.

It is an arithmetic number, because the mean of its divisors is an integer number (12317004).

Almost surely, 2^42229724 is an apocalyptic number.

It is an amenable number.

42229724 is a deficient number, since it is larger than the sum of its proper divisors (31672300).

42229724 is a wasteful number, since it uses less digits than its factorization.

42229724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557435 (or 10557433 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 42229724 is about 6498.4401205212. The cubic root of 42229724 is about 348.2352639123.

Subtracting 42229724 from its reverse (42792224), we obtain a square (562500 = 750²).

The spelling of 42229724 in words is "forty-two million, two hundred twenty-nine thousand, seven hundred twenty-four".