126720541254 has 32 divisors (see below), whose sum is σ = 257729552640. Its totient is φ = 41527914912.

The previous prime is 126720541229. The next prime is 126720541271. The reversal of 126720541254 is 452145027621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105034 + ... + 514269.

It is an arithmetic number, because the mean of its divisors is an integer number (8054048520).

Almost surely, 2^126720541254 is an apocalyptic number.

126720541254 is an abundant number, since it is smaller than the sum of its proper divisors (131009011386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126720541254 is a wasteful number, since it uses less digits than its factorization.

126720541254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619884.

The product of its (nonzero) digits is 134400, while the sum is 39.

Adding to 126720541254 its reverse (452145027621), we get a palindrome (578865568875).

The spelling of 126720541254 in words is "one hundred twenty-six billion, seven hundred twenty million, five hundred forty-one thousand, two hundred fifty-four".