1427309145 has 12 divisors (see below), whose sum is σ = 2474002596. Its totient is φ = 761231520.

The previous prime is 1427309123. The next prime is 1427309159. The reversal of 1427309145 is 5419037241.

It can be written as a sum of positive squares in 2 ways, for example, as 872847936 + 554461209 = 29544^2 + 23547^2 .

It is not a de Polignac number, because 1427309145 - 2¹⁵ = 1427276377 is a prime.

It is a super-2 number, since 2×1427309145² = 4074422790801262050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15858946 + ... + 15859035.

It is an arithmetic number, because the mean of its divisors is an integer number (206166883).

Almost surely, 2^1427309145 is an apocalyptic number.

1427309145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1427309145 is a deficient number, since it is larger than the sum of its proper divisors (1046693451).

1427309145 is a wasteful number, since it uses less digits than its factorization.

1427309145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31717992 (or 31717989 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1427309145 is about 37779.7451685424. The cubic root of 1427309145 is about 1125.9160657148.

The spelling of 1427309145 in words is "one billion, four hundred twenty-seven million, three hundred nine thousand, one hundred forty-five".