7120999 has 2 divisors, whose sum is σ = 7121000. Its totient is φ = 7120998.

The previous prime is 7120987. The next prime is 7121021. The reversal of 7120999 is 9990217.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7120999 - 2⁷ = 7120871 is a prime.

It is a Chen prime.

7120999 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7120969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3560499 + 3560500.

It is an arithmetic number, because the mean of its divisors is an integer number (3560500).

Almost surely, 2^7120999 is an apocalyptic number.

7120999 is a deficient number, since it is larger than the sum of its proper divisors (1).

7120999 is an equidigital number, since it uses as much as digits as its factorization.

7120999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 7120999 is about 2668.5200017987. The cubic root of 7120999 is about 192.3890314501.

The spelling of 7120999 in words is "seven million, one hundred twenty thousand, nine hundred ninety-nine".