120672731 has 2 divisors, whose sum is σ = 120672732. Its totient is φ = 120672730.

The previous prime is 120672653. The next prime is 120672763. The reversal of 120672731 is 137276021.

It is a strong prime.

It is an emirp because it is prime and its reverse (137276021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120672731 is a prime.

It is a super-2 number, since 2×120672731² = 29123816013996722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 120672694 and 120672703.

It is not a weakly prime, because it can be changed into another prime (120672031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60336365 + 60336366.

It is an arithmetic number, because the mean of its divisors is an integer number (60336366).

Almost surely, 2^120672731 is an apocalyptic number.

120672731 is a deficient number, since it is larger than the sum of its proper divisors (1).

120672731 is an equidigital number, since it uses as much as digits as its factorization.

120672731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 120672731 is about 10985.1140640414. The cubic root of 120672731 is about 494.1624185242.

It can be divided in two parts, 1206 and 72731, that added together give a palindrome (73937).

The spelling of 120672731 in words is "one hundred twenty million, six hundred seventy-two thousand, seven hundred thirty-one".