1427287139 has 8 divisors (see below), whose sum is σ = 1511609040. Its totient is φ = 1343005696.

The previous prime is 1427287129. The next prime is 1427287159. The reversal of 1427287139 is 9317827241.

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

It is a cyclic number.

It is not a de Polignac number, because 1427287139 - 2⁴ = 1427287123 is a prime.

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 1427287139.

It is not an unprimeable number, because it can be changed into a prime (1427287129) 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, 92147 + ... + 106515.

It is an arithmetic number, because the mean of its divisors is an integer number (188951130).

Almost surely, 2^1427287139 is an apocalyptic number.

1427287139 is a deficient number, since it is larger than the sum of its proper divisors (84321901).

1427287139 is a wasteful number, since it uses less digits than its factorization.

1427287139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20229.

The product of its digits is 169344, while the sum is 44.

The square root of 1427287139 is about 37779.4539267047. The cubic root of 1427287139 is about 1125.9102792935.

The spelling of 1427287139 in words is "one billion, four hundred twenty-seven million, two hundred eighty-seven thousand, one hundred thirty-nine".