7254139945 has 24 divisors (see below), whose sum is σ = 9603999576. Its totient is φ = 5255797248.

The previous prime is 7254139939. The next prime is 7254139957. The reversal of 7254139945 is 5499314527.

It can be written as a sum of positive squares in 12 ways, for example, as 3335755536 + 3918384409 = 57756^2 + 62597^2 .

It is not a de Polignac number, because 7254139945 - 2⁷ = 7254139817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 36204 + ... + 125773.

It is an arithmetic number, because the mean of its divisors is an integer number (400166649).

Almost surely, 2^7254139945 is an apocalyptic number.

It is an amenable number.

7254139945 is a deficient number, since it is larger than the sum of its proper divisors (2349859631).

7254139945 is a wasteful number, since it uses less digits than its factorization.

7254139945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162061 (or 162048 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 49.

The square root of 7254139945 is about 85171.2389542385. The cubic root of 7254139945 is about 1935.8066459940.

The spelling of 7254139945 in words is "seven billion, two hundred fifty-four million, one hundred thirty-nine thousand, nine hundred forty-five".