126051421 has 2 divisors, whose sum is σ = 126051422. Its totient is φ = 126051420.

The previous prime is 126051391. The next prime is 126051427. The reversal of 126051421 is 124150621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120692196 + 5359225 = 10986^2 + 2315^2 .

It is a cyclic number.

It is not a de Polignac number, because 126051421 - 2⁵ = 126051389 is a prime.

It is a super-2 number, since 2×126051421² = 31777921472238482, 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 = 126051392 and 126051401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126051427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63025710 + 63025711.

It is an arithmetic number, because the mean of its divisors is an integer number (63025711).

Almost surely, 2^126051421 is an apocalyptic number.

It is an amenable number.

126051421 is a deficient number, since it is larger than the sum of its proper divisors (1).

126051421 is an equidigital number, since it uses as much as digits as its factorization.

126051421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 126051421 is about 11227.2624000689. The cubic root of 126051421 is about 501.3979823147.

The spelling of 126051421 in words is "one hundred twenty-six million, fifty-one thousand, four hundred twenty-one".