19431742 has 16 divisors (see below), whose sum is σ = 32274432. Its totient is φ = 8700120.

The previous prime is 19431739. The next prime is 19431751. The reversal of 19431742 is 24713491.

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, 5118 + ... + 8065.

It is an arithmetic number, because the mean of its divisors is an integer number (2017152).

Almost surely, 2^19431742 is an apocalyptic number.

19431742 is a deficient number, since it is larger than the sum of its proper divisors (12842690).

19431742 is a wasteful number, since it uses less digits than its factorization.

19431742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13263.

The product of its digits is 6048, while the sum is 31.

The square root of 19431742 is about 4408.1449613188. The cubic root of 19431742 is about 268.8462059027.

The spelling of 19431742 in words is "nineteen million, four hundred thirty-one thousand, seven hundred forty-two".