42920849 has 8 divisors (see below), whose sum is σ = 43685568. Its totient is φ = 42160720.

The previous prime is 42920827. The next prime is 42920863. The reversal of 42920849 is 94802924.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42920849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42920819) 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, 21554 + ... + 23460.

It is an arithmetic number, because the mean of its divisors is an integer number (5460696).

Almost surely, 2^42920849 is an apocalyptic number.

It is an amenable number.

42920849 is a deficient number, since it is larger than the sum of its proper divisors (764719).

42920849 is a wasteful number, since it uses less digits than its factorization.

42920849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 42920849 is about 6551.4005372897. The cubic root of 42920849 is about 350.1247147391.

The spelling of 42920849 in words is "forty-two million, nine hundred twenty thousand, eight hundred forty-nine".