1402742149 has 4 divisors (see below), whose sum is σ = 1429209036. Its totient is φ = 1376275264.

The previous prime is 1402742141. The next prime is 1402742161. The reversal of 1402742149 is 9412472041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1277705025 + 125037124 = 35745^2 + 11182^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402742149 - 2³ = 1402742141 is a prime.

It is a super-2 number, since 2×1402742149² = 3935371073162276402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402742141) 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, 13233364 + ... + 13233469.

It is an arithmetic number, because the mean of its divisors is an integer number (357302259).

Almost surely, 2^1402742149 is an apocalyptic number.

It is an amenable number.

1402742149 is a deficient number, since it is larger than the sum of its proper divisors (26466887).

1402742149 is an equidigital number, since it uses as much as digits as its factorization.

1402742149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26466886.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 1402742149 is about 37453.1994494462. The cubic root of 1402742149 is about 1119.4188494908.

The spelling of 1402742149 in words is "one billion, four hundred two million, seven hundred forty-two thousand, one hundred forty-nine".