42921479 has 8 divisors (see below), whose sum is σ = 44607360. Its totient is φ = 41249376.

The previous prime is 42921457. The next prime is 42921509. The reversal of 42921479 is 97412924.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42921479 - 2⁸ = 42921223 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 (42921079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3149 + ... + 9785.

It is an arithmetic number, because the mean of its divisors is an integer number (5575920).

Almost surely, 2^42921479 is an apocalyptic number.

42921479 is a deficient number, since it is larger than the sum of its proper divisors (1685881).

42921479 is a wasteful number, since it uses less digits than its factorization.

42921479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6889.

The product of its digits is 36288, while the sum is 38.

The square root of 42921479 is about 6551.4486184355. The cubic root of 42921479 is about 350.1264277954.

The spelling of 42921479 in words is "forty-two million, nine hundred twenty-one thousand, four hundred seventy-nine".