42010257 has 4 divisors (see below), whose sum is σ = 56013680. Its totient is φ = 28006836.

The previous prime is 42010253. The next prime is 42010261. The reversal of 42010257 is 75201024.

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 (42010253) and next prime (42010261).

It is not a de Polignac number, because 42010257 - 2² = 42010253 is a prime.

It is a super-3 number, since 3×42010257³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42010253) 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, 7001707 + ... + 7001712.

It is an arithmetic number, because the mean of its divisors is an integer number (14003420).

Almost surely, 2^42010257 is an apocalyptic number.

It is an amenable number.

42010257 is a deficient number, since it is larger than the sum of its proper divisors (14003423).

42010257 is a wasteful number, since it uses less digits than its factorization.

42010257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14003422.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 42010257 is about 6481.5319948296. The cubic root of 42010257 is about 347.6309586976.

The spelling of 42010257 in words is "forty-two million, ten thousand, two hundred fifty-seven".