42726511278 has 48 divisors (see below), whose sum is σ = 101916500400. Its totient is φ = 12828637440.

The previous prime is 42726511273. The next prime is 42726511283. The reversal of 42726511278 is 87211562724.

42726511278 is a `hidden beast` number, since 42 + 7 + 26 + 511 + 2 + 78 = 666.

It is an interprime number because it is at equal distance from previous prime (42726511273) and next prime (42726511283).

It is a super-2 number, since 2×42726511278² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42726511273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 968283 + ... + 1011446.

It is an arithmetic number, because the mean of its divisors is an integer number (2123260425).

Almost surely, 2^42726511278 is an apocalyptic number.

42726511278 is an abundant number, since it is smaller than the sum of its proper divisors (59189989122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42726511278 is a wasteful number, since it uses less digits than its factorization.

42726511278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979857 (or 1979854 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The spelling of 42726511278 in words is "forty-two billion, seven hundred twenty-six million, five hundred eleven thousand, two hundred seventy-eight".