42179748261 has 16 divisors (see below), whose sum is σ = 65585616000. Its totient is φ = 24102712704.

The previous prime is 42179748239. The next prime is 42179748293. The reversal of 42179748261 is 16284797124.

42179748261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42179748261 - 2⁵ = 42179748229 is a prime.

It is a super-2 number, since 2×42179748261² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42179748161) 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, 20494476 + ... + 20496533.

It is an arithmetic number, because the mean of its divisors is an integer number (4099101000).

Almost surely, 2^42179748261 is an apocalyptic number.

It is an amenable number.

42179748261 is a deficient number, since it is larger than the sum of its proper divisors (23405867739).

42179748261 is an equidigital number, since it uses as much as digits as its factorization.

42179748261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40991033 (or 40991019 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The spelling of 42179748261 in words is "forty-two billion, one hundred seventy-nine million, seven hundred forty-eight thousand, two hundred sixty-one".