126873642 has 40 divisors (see below), whose sum is σ = 296054496. Its totient is φ = 36245496.

The previous prime is 126873623. The next prime is 126873689. The reversal of 126873642 is 246378621.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 126873642.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10003 + ... + 18809.

Almost surely, 2^126873642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126873642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148027248).

126873642 is an abundant number, since it is smaller than the sum of its proper divisors (169180854).

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

126873642 is an frugal number, since it uses more digits than its factorization.

126873642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8840 (or 8819 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 126873642 is about 11263.8200447273. The cubic root of 126873642 is about 502.4858103466.

The spelling of 126873642 in words is "one hundred twenty-six million, eight hundred seventy-three thousand, six hundred forty-two".