42530149923 has 16 divisors (see below), whose sum is σ = 57156608256. Its totient is φ = 28128690720.

The previous prime is 42530149861. The next prime is 42530149943. The reversal of 42530149923 is 32994103524.

It is not a de Polignac number, because 42530149923 - 2⁶ = 42530149859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42530149943) 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, 1500186 + ... + 1528272.

It is an arithmetic number, because the mean of its divisors is an integer number (3572288016).

Almost surely, 2^42530149923 is an apocalyptic number.

42530149923 is a deficient number, since it is larger than the sum of its proper divisors (14626458333).

42530149923 is a wasteful number, since it uses less digits than its factorization.

42530149923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32074.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 42530149923 in words is "forty-two billion, five hundred thirty million, one hundred forty-nine thousand, nine hundred twenty-three".