42278239801 has 4 divisors (see below), whose sum is σ = 48317988352. Its totient is φ = 36238491252.

The previous prime is 42278239771. The next prime is 42278239819. The reversal of 42278239801 is 10893287224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42278239801 - 2²³ = 42269851193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42278239901) 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, 3019874265 + ... + 3019874278.

It is an arithmetic number, because the mean of its divisors is an integer number (12079497088).

Almost surely, 2^42278239801 is an apocalyptic number.

It is an amenable number.

42278239801 is a deficient number, since it is larger than the sum of its proper divisors (6039748551).

42278239801 is an equidigital number, since it uses as much as digits as its factorization.

42278239801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6039748550.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 42278239801 in words is "forty-two billion, two hundred seventy-eight million, two hundred thirty-nine thousand, eight hundred one".