42493845 has 16 divisors (see below), whose sum is σ = 70335360. Its totient is φ = 21881664.

The previous prime is 42493837. The next prime is 42493849. The reversal of 42493845 is 54839424.

It is not a de Polignac number, because 42493845 - 2³ = 42493837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42493849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48409 + ... + 49278.

It is an arithmetic number, because the mean of its divisors is an integer number (4395960).

Almost surely, 2^42493845 is an apocalyptic number.

It is an amenable number.

42493845 is a deficient number, since it is larger than the sum of its proper divisors (27841515).

42493845 is a wasteful number, since it uses less digits than its factorization.

42493845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97724.

The product of its digits is 138240, while the sum is 39.

The square root of 42493845 is about 6518.7303211592. The cubic root of 42493845 is about 348.9597548577.

The spelling of 42493845 in words is "forty-two million, four hundred ninety-three thousand, eight hundred forty-five".