128631342 has 16 divisors (see below), whose sum is σ = 294014592. Its totient is φ = 36751800.

The previous prime is 128631337. The next prime is 128631353. The reversal of 128631342 is 243136821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1531284 + ... + 1531367.

It is an arithmetic number, because the mean of its divisors is an integer number (18375912).

Almost surely, 2^128631342 is an apocalyptic number.

128631342 is an abundant number, since it is smaller than the sum of its proper divisors (165383250).

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

128631342 is a wasteful number, since it uses less digits than its factorization.

128631342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062663.

The product of its digits is 6912, while the sum is 30.

The square root of 128631342 is about 11341.5758164375. The cubic root of 128631342 is about 504.7956458402.

The spelling of 128631342 in words is "one hundred twenty-eight million, six hundred thirty-one thousand, three hundred forty-two".