42493963 has 4 divisors (see below), whose sum is σ = 43864768. Its totient is φ = 41123160.

The previous prime is 42493951. The next prime is 42493973. The reversal of 42493963 is 36939424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42493963 - 2²⁵ = 8939531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42493973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685356 + ... + 685417.

It is an arithmetic number, because the mean of its divisors is an integer number (10966192).

Almost surely, 2^42493963 is an apocalyptic number.

42493963 is a deficient number, since it is larger than the sum of its proper divisors (1370805).

42493963 is a wasteful number, since it uses less digits than its factorization.

42493963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370804.

The product of its digits is 139968, while the sum is 40.

The square root of 42493963 is about 6518.7393719952. The cubic root of 42493963 is about 348.9600778630.

The spelling of 42493963 in words is "forty-two million, four hundred ninety-three thousand, nine hundred sixty-three".