42253747 has 4 divisors (see below), whose sum is σ = 42373800. Its totient is φ = 42133696.

The previous prime is 42253727. The next prime is 42253753. The reversal of 42253747 is 74735224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42253747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42253727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59497 + ... + 60202.

It is an arithmetic number, because the mean of its divisors is an integer number (10593450).

Almost surely, 2^42253747 is an apocalyptic number.

42253747 is a deficient number, since it is larger than the sum of its proper divisors (120053).

42253747 is a wasteful number, since it uses less digits than its factorization.

42253747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120052.

The product of its digits is 47040, while the sum is 34.

The square root of 42253747 is about 6500.2882243790. The cubic root of 42253747 is about 348.3012843133.

The spelling of 42253747 in words is "forty-two million, two hundred fifty-three thousand, seven hundred forty-seven".