102754921 has 2 divisors, whose sum is σ = 102754922. Its totient is φ = 102754920.

The previous prime is 102754909. The next prime is 102754973. The reversal of 102754921 is 129457201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85821696 + 16933225 = 9264^2 + 4115^2 .

It is an emirp because it is prime and its reverse (129457201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102754921 - 2²¹ = 100657769 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102754901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51377460 + 51377461.

It is an arithmetic number, because the mean of its divisors is an integer number (51377461).

Almost surely, 2^102754921 is an apocalyptic number.

It is an amenable number.

102754921 is a deficient number, since it is larger than the sum of its proper divisors (1).

102754921 is an equidigital number, since it uses as much as digits as its factorization.

102754921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 102754921 is about 10136.8101984796. The cubic root of 102754921 is about 468.3827332155.

The spelling of 102754921 in words is "one hundred two million, seven hundred fifty-four thousand, nine hundred twenty-one".