42961897 has 6 divisors (see below), whose sum is σ = 47222714. Its totient is φ = 39056160.

The previous prime is 42961883. The next prime is 42961931. The reversal of 42961897 is 79816924.

It can be written as a sum of positive squares in only one way, i.e., 42263001 + 698896 = 6501^2 + 836^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42961897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42961817) 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, 177408 + ... + 177649.

Almost surely, 2^42961897 is an apocalyptic number.

It is an amenable number.

42961897 is a deficient number, since it is larger than the sum of its proper divisors (4260817).

42961897 is a wasteful number, since it uses less digits than its factorization.

42961897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355079 (or 355068 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 42961897 is about 6554.5325538897. The cubic root of 42961897 is about 350.2362948566.

It can be divided in two parts, 429 and 61897, that added together give a palindrome (62326).

The spelling of 42961897 in words is "forty-two million, nine hundred sixty-one thousand, eight hundred ninety-seven".