7120021249 has 16 divisors (see below), whose sum is σ = 7806015360. Its totient is φ = 6440560000.

The previous prime is 7120021189. The next prime is 7120021261. The reversal of 7120021249 is 9421200217.

It is a cyclic number.

It is not a de Polignac number, because 7120021249 - 2¹¹ = 7120019201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7120081249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2396637 + ... + 2399605.

It is an arithmetic number, because the mean of its divisors is an integer number (487875960).

Almost surely, 2^7120021249 is an apocalyptic number.

It is an amenable number.

7120021249 is a deficient number, since it is larger than the sum of its proper divisors (685994111).

7120021249 is a wasteful number, since it uses less digits than its factorization.

7120021249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 7120021249 is about 84380.2183512226. The cubic root of 7120021249 is about 1923.8022570166.

The spelling of 7120021249 in words is "seven billion, one hundred twenty million, twenty-one thousand, two hundred forty-nine".