7521120146 has 8 divisors (see below), whose sum is σ = 11284245324. Its totient is φ = 3759705040.

The previous prime is 7521120133. The next prime is 7521120157. The reversal of 7521120146 is 6410211257.

It can be written as a sum of positive squares in 2 ways, for example, as 5477628121 + 2043492025 = 74011^2 + 45205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7521120146² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416465 + ... + 434148.

Almost surely, 2^7521120146 is an apocalyptic number.

7521120146 is a deficient number, since it is larger than the sum of its proper divisors (3763125178).

7521120146 is a wasteful number, since it uses less digits than its factorization.

7521120146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855036.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 7521120146 is about 86724.3918744894. The cubic root of 7521120146 is about 1959.2694891496.

The spelling of 7521120146 in words is "seven billion, five hundred twenty-one million, one hundred twenty thousand, one hundred forty-six".