42065457 has 16 divisors (see below), whose sum is σ = 66311040. Its totient is φ = 23208192.

The previous prime is 42065453. The next prime is 42065461. The reversal of 42065457 is 75456024.

It is an interprime number because it is at equal distance from previous prime (42065453) and next prime (42065461).

It is not a de Polignac number, because 42065457 - 2² = 42065453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42065453) 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, 33928 + ... + 35145.

It is an arithmetic number, because the mean of its divisors is an integer number (4144440).

Almost surely, 2^42065457 is an apocalyptic number.

It is an amenable number.

42065457 is a deficient number, since it is larger than the sum of its proper divisors (24245583).

42065457 is a wasteful number, since it uses less digits than its factorization.

42065457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69112.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 42065457 is about 6485.7888494770. The cubic root of 42065457 is about 347.7831503429.

The spelling of 42065457 in words is "forty-two million, sixty-five thousand, four hundred fifty-seven".