1252124739 has 6 divisors (see below), whose sum is σ = 1808624636. Its totient is φ = 834749820.

The previous prime is 1252124729. The next prime is 1252124759. The reversal of 1252124739 is 9374212521.

It is not a de Polignac number, because 1252124739 - 2⁴ = 1252124723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252124729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69562477 + ... + 69562494.

Almost surely, 2^1252124739 is an apocalyptic number.

1252124739 is a deficient number, since it is larger than the sum of its proper divisors (556499897).

1252124739 is a wasteful number, since it uses less digits than its factorization.

1252124739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139124977 (or 139124974 counting only the distinct ones).

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

The square root of 1252124739 is about 35385.3746482922. The cubic root of 1252124739 is about 1077.8273477085.

It can be divided in two parts, 1 and 252124739, that added together give a triangular number (252124740 = T₂₂₄₅₅).

The spelling of 1252124739 in words is "one billion, two hundred fifty-two million, one hundred twenty-four thousand, seven hundred thirty-nine".