42502457 has 4 divisors (see below), whose sum is σ = 43873536. Its totient is φ = 41131380.

The previous prime is 42502451. The next prime is 42502463. The reversal of 42502457 is 75420524.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (42502451) and next prime (42502463).

It is a cyclic number.

It is not a de Polignac number, because 42502457 - 2¹² = 42498361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42502451) 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, 685493 + ... + 685554.

It is an arithmetic number, because the mean of its divisors is an integer number (10968384).

Almost surely, 2^42502457 is an apocalyptic number.

It is an amenable number.

42502457 is a deficient number, since it is larger than the sum of its proper divisors (1371079).

42502457 is a wasteful number, since it uses less digits than its factorization.

42502457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371078.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 42502457 is about 6519.3908457769. The cubic root of 42502457 is about 348.9833272003.

The spelling of 42502457 in words is "forty-two million, five hundred two thousand, four hundred fifty-seven".