128351742 has 32 divisors (see below), whose sum is σ = 265333632. Its totient is φ = 41360544.

The previous prime is 128351723. The next prime is 128351759. The reversal of 128351742 is 247153821.

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, 34413 + ... + 37959.

It is an arithmetic number, because the mean of its divisors is an integer number (8291676).

Almost surely, 2^128351742 is an apocalyptic number.

128351742 is an abundant number, since it is smaller than the sum of its proper divisors (136981890).

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

128351742 is a wasteful number, since it uses less digits than its factorization.

128351742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752.

The product of its digits is 13440, while the sum is 33.

The square root of 128351742 is about 11329.2427814042. The cubic root of 128351742 is about 504.4296301972.

The spelling of 128351742 in words is "one hundred twenty-eight million, three hundred fifty-one thousand, seven hundred forty-two".