126250121634 has 64 divisors (see below), whose sum is σ = 311029904640. Its totient is φ = 33268838400.

The previous prime is 126250121611. The next prime is 126250121713. The reversal of 126250121634 is 436121052621.

It is a junction number, because it is equal to n+sod(n) for n = 126250121595 and 126250121604.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 559482 + ... + 752010.

It is an arithmetic number, because the mean of its divisors is an integer number (4859842260).

Almost surely, 2^126250121634 is an apocalyptic number.

126250121634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 126250121634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155514952320).

126250121634 is an abundant number, since it is smaller than the sum of its proper divisors (184779783006).

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

126250121634 is a wasteful number, since it uses less digits than its factorization.

126250121634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193755.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 126250121634 in words is "one hundred twenty-six billion, two hundred fifty million, one hundred twenty-one thousand, six hundred thirty-four".