42900849 has 6 divisors (see below), whose sum is σ = 61967906. Its totient is φ = 28600560.

The previous prime is 42900833. The next prime is 42900853. The reversal of 42900849 is 94800924.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42810849 + 90000 = 6543^2 + 300^2 .

It is not a de Polignac number, because 42900849 - 2⁴ = 42900833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42900829) 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, 2383372 + ... + 2383389.

Almost surely, 2^42900849 is an apocalyptic number.

It is an amenable number.

42900849 is a deficient number, since it is larger than the sum of its proper divisors (19067057).

42900849 is a wasteful number, since it uses less digits than its factorization.

42900849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4766767 (or 4766764 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 42900849 is about 6549.8739682531. The cubic root of 42900849 is about 350.0703232844.

The spelling of 42900849 in words is "forty-two million, nine hundred thousand, eight hundred forty-nine".