42690775 has 6 divisors (see below), whose sum is σ = 52936592. Its totient is φ = 34152600.

The previous prime is 42690763. The next prime is 42690779. The reversal of 42690775 is 57709624.

It is not a de Polignac number, because 42690775 - 2⁵ = 42690743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42690779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 853791 + ... + 853840.

Almost surely, 2^42690775 is an apocalyptic number.

42690775 is a deficient number, since it is larger than the sum of its proper divisors (10245817).

42690775 is a wasteful number, since it uses less digits than its factorization.

42690775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707641 (or 1707636 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 42690775 is about 6533.8177966638. The cubic root of 42690775 is about 349.4979877808.

The spelling of 42690775 in words is "forty-two million, six hundred ninety thousand, seven hundred seventy-five".