42074747 has 16 divisors (see below), whose sum is σ = 49751520. Its totient is φ = 35287200.

The previous prime is 42074743. The next prime is 42074761. The reversal of 42074747 is 74747024.

It is not a de Polignac number, because 42074747 - 2² = 42074743 is a prime.

It is a super-2 number, since 2×42074747² = 3540568670228018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42074741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23297 + ... + 25037.

It is an arithmetic number, because the mean of its divisors is an integer number (3109470).

Almost surely, 2^42074747 is an apocalyptic number.

42074747 is a deficient number, since it is larger than the sum of its proper divisors (7676773).

42074747 is a wasteful number, since it uses less digits than its factorization.

42074747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791 (or 1765 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 35.

The square root of 42074747 is about 6486.5049911335. The cubic root of 42074747 is about 347.8087506642.

The spelling of 42074747 in words is "forty-two million, seventy-four thousand, seven hundred forty-seven".