42774386531 has 8 divisors (see below), whose sum is σ = 43020937440. Its totient is φ = 42528544128.

The previous prime is 42774386513. The next prime is 42774386587. The reversal of 42774386531 is 13568347724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42774386531 is a prime.

It is a super-2 number, since 2×42774386531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42774386531.

It is not an unprimeable number, because it can be changed into a prime (42774389531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55796 + ... + 297761.

It is an arithmetic number, because the mean of its divisors is an integer number (5377617180).

Almost surely, 2^42774386531 is an apocalyptic number.

42774386531 is a deficient number, since it is larger than the sum of its proper divisors (246550909).

42774386531 is a wasteful number, since it uses less digits than its factorization.

42774386531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354253.

The product of its digits is 3386880, while the sum is 50.

The spelling of 42774386531 in words is "forty-two billion, seven hundred seventy-four million, three hundred eighty-six thousand, five hundred thirty-one".