42919651 has 6 divisors (see below), whose sum is σ = 45297852. Its totient is φ = 40660380.

The previous prime is 42919649. The next prime is 42919691. The reversal of 42919651 is 15691924.

It is not a de Polignac number, because 42919651 - 2¹ = 42919649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42919651.

It is not an unprimeable number, because it can be changed into a prime (42919691) 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, 59085 + ... + 59806.

It is an arithmetic number, because the mean of its divisors is an integer number (7549642).

Almost surely, 2^42919651 is an apocalyptic number.

42919651 is a deficient number, since it is larger than the sum of its proper divisors (2378201).

42919651 is a wasteful number, since it uses less digits than its factorization.

42919651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118929 (or 118910 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 42919651 is about 6551.3091058200. The cubic root of 42919651 is about 350.1214571667.

The spelling of 42919651 in words is "forty-two million, nine hundred nineteen thousand, six hundred fifty-one".