126465421 has 2 divisors, whose sum is σ = 126465422. Its totient is φ = 126465420.

The previous prime is 126465401. The next prime is 126465467. The reversal of 126465421 is 124564621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112063396 + 14402025 = 10586^2 + 3795^2 .

It is an emirp because it is prime and its reverse (124564621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126465421 - 2⁹ = 126464909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126465401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63232710 + 63232711.

It is an arithmetic number, because the mean of its divisors is an integer number (63232711).

Almost surely, 2^126465421 is an apocalyptic number.

It is an amenable number.

126465421 is a deficient number, since it is larger than the sum of its proper divisors (1).

126465421 is an equidigital number, since it uses as much as digits as its factorization.

126465421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

The square root of 126465421 is about 11245.6845500841. The cubic root of 126465421 is about 501.9463086019.

The spelling of 126465421 in words is "one hundred twenty-six million, four hundred sixty-five thousand, four hundred twenty-one".