120019969 has 2 divisors, whose sum is σ = 120019970. Its totient is φ = 120019968.

The previous prime is 120019937. The next prime is 120019987. The reversal of 120019969 is 969910021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60652944 + 59367025 = 7788^2 + 7705^2 .

It is a cyclic number.

It is not a de Polignac number, because 120019969 - 2⁵ = 120019937 is a prime.

It is a super-2 number, since 2×120019969² = 28809585917521922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120019919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60009984 + 60009985.

It is an arithmetic number, because the mean of its divisors is an integer number (60009985).

Almost surely, 2^120019969 is an apocalyptic number.

It is an amenable number.

120019969 is a deficient number, since it is larger than the sum of its proper divisors (1).

120019969 is an equidigital number, since it uses as much as digits as its factorization.

120019969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 120019969 is about 10955.3625681672. The cubic root of 120019969 is about 493.2697732313.

The spelling of 120019969 in words is "one hundred twenty million, nineteen thousand, nine hundred sixty-nine".