122953421 has 2 divisors, whose sum is σ = 122953422. Its totient is φ = 122953420.

The previous prime is 122953393. The next prime is 122953429. The reversal of 122953421 is 124359221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79459396 + 43494025 = 8914^2 + 6595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122953421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122953429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61476710 + 61476711.

It is an arithmetic number, because the mean of its divisors is an integer number (61476711).

Almost surely, 2^122953421 is an apocalyptic number.

It is an amenable number.

122953421 is a deficient number, since it is larger than the sum of its proper divisors (1).

122953421 is an equidigital number, since it uses as much as digits as its factorization.

122953421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 122953421 is about 11088.4363640687. The cubic root of 122953421 is about 497.2561986504.

The spelling of 122953421 in words is "one hundred twenty-two million, nine hundred fifty-three thousand, four hundred twenty-one".