126262377377421 has 32 divisors (see below), whose sum is σ = 176611990118400. Its totient is φ = 80084108332800.

The previous prime is 126262377377407. The next prime is 126262377377429. The reversal of 126262377377421 is 124773773262621.

It is a happy number.

126262377377421 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 126262377377421 - 2²¹ = 126262375280269 is a prime.

It is a super-2 number, since 2×126262377377421² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126262377377429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5564341 + ... + 16837061.

It is an arithmetic number, because the mean of its divisors is an integer number (5519124691200).

Almost surely, 2^{126262377377421} is an apocalyptic number.

It is an amenable number.

126262377377421 is a deficient number, since it is larger than the sum of its proper divisors (50349612740979).

126262377377421 is a wasteful number, since it uses less digits than its factorization.

126262377377421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11273617.

The product of its digits is 49787136, while the sum is 60.

The spelling of 126262377377421 in words is "one hundred twenty-six trillion, two hundred sixty-two billion, three hundred seventy-seven million, three hundred seventy-seven thousand, four hundred twenty-one".