7242971402 has 4 divisors (see below), whose sum is σ = 10864457106. Its totient is φ = 3621485700.

The previous prime is 7242971387. The next prime is 7242971413. The reversal of 7242971402 is 2041792427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2041792427 = 61 ⋅33472007.

It can be written as a sum of positive squares in only one way, i.e., 4991563801 + 2251407601 = 70651^2 + 47449^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1810742849 + ... + 1810742852.

Almost surely, 2^7242971402 is an apocalyptic number.

7242971402 is a deficient number, since it is larger than the sum of its proper divisors (3621485704).

7242971402 is a wasteful number, since it uses less digits than its factorization.

7242971402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621485703.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 7242971402 is about 85105.6484729421. The cubic root of 7242971402 is about 1934.8126735886.

The spelling of 7242971402 in words is "seven billion, two hundred forty-two million, nine hundred seventy-one thousand, four hundred two".