42961655 has 12 divisors (see below), whose sum is σ = 56667576. Its totient is φ = 31244400.

The previous prime is 42961651. The next prime is 42961657. The reversal of 42961655 is 55616924.

It is not a de Polignac number, because 42961655 - 2² = 42961651 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 (42961651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34901 + ... + 36110.

It is an arithmetic number, because the mean of its divisors is an integer number (4722298).

Almost surely, 2^42961655 is an apocalyptic number.

42961655 is a deficient number, since it is larger than the sum of its proper divisors (13705921).

42961655 is a wasteful number, since it uses less digits than its factorization.

42961655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71038 (or 71027 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 42961655 is about 6554.5140933558. The cubic root of 42961655 is about 350.2356372402.

The spelling of 42961655 in words is "forty-two million, nine hundred sixty-one thousand, six hundred fifty-five".