102958721 has 2 divisors, whose sum is σ = 102958722. Its totient is φ = 102958720.

The previous prime is 102958703. The next prime is 102958759. The reversal of 102958721 is 127859201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83466496 + 19492225 = 9136^2 + 4415^2 .

It is a cyclic number.

It is not a de Polignac number, because 102958721 - 2²² = 98764417 is a prime.

It is not a weakly prime, because it can be changed into another prime (102958771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51479360 + 51479361.

It is an arithmetic number, because the mean of its divisors is an integer number (51479361).

Almost surely, 2^102958721 is an apocalyptic number.

It is an amenable number.

102958721 is a deficient number, since it is larger than the sum of its proper divisors (1).

102958721 is an equidigital number, since it uses as much as digits as its factorization.

102958721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 102958721 is about 10146.8576909307. The cubic root of 102958721 is about 468.6921859127.

The spelling of 102958721 in words is "one hundred two million, nine hundred fifty-eight thousand, seven hundred twenty-one".