7254139946 has 4 divisors (see below), whose sum is σ = 10881209922. Its totient is φ = 3627069972.

The previous prime is 7254139939. The next prime is 7254139957. The reversal of 7254139946 is 6499314527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6499314527 = 2069 ⋅3141283.

It can be written as a sum of positive squares in only one way, i.e., 3701383921 + 3552756025 = 60839^2 + 59605^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7254139894 and 7254139903.

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 as a sum of consecutive naturals, namely, 1813534985 + ... + 1813534988.

Almost surely, 2^7254139946 is an apocalyptic number.

7254139946 is a deficient number, since it is larger than the sum of its proper divisors (3627069976).

7254139946 is a wasteful number, since it uses less digits than its factorization.

7254139946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627069975.

The product of its digits is 1632960, while the sum is 50.

The square root of 7254139946 is about 85171.2389601091. The cubic root of 7254139946 is about 1935.8066460830.

The spelling of 7254139946 in words is "seven billion, two hundred fifty-four million, one hundred thirty-nine thousand, nine hundred forty-six".