42651611 has 4 divisors (see below), whose sum is σ = 42934224. Its totient is φ = 42369000.

The previous prime is 42651569. The next prime is 42651613. The reversal of 42651611 is 11615624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42651611 - 2¹⁸ = 42389467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42651613) 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, 141080 + ... + 141381.

It is an arithmetic number, because the mean of its divisors is an integer number (10733556).

Almost surely, 2^42651611 is an apocalyptic number.

42651611 is a deficient number, since it is larger than the sum of its proper divisors (282613).

42651611 is a wasteful number, since it uses less digits than its factorization.

42651611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282612.

The product of its digits is 1440, while the sum is 26.

The square root of 42651611 is about 6530.8200863291. The cubic root of 42651611 is about 349.3910800083.

The spelling of 42651611 in words is "forty-two million, six hundred fifty-one thousand, six hundred eleven".