19351242 has 12 divisors (see below), whose sum is σ = 41927730. Its totient is φ = 6450408.

The previous prime is 19351237. The next prime is 19351243. The reversal of 19351242 is 24215391.

It can be written as a sum of positive squares in only one way, i.e., 10830681 + 8520561 = 3291^2 + 2919^2 .

It is not an unprimeable number, because it can be changed into a prime (19351243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 537517 + ... + 537552.

Almost surely, 2^19351242 is an apocalyptic number.

19351242 is an abundant number, since it is smaller than the sum of its proper divisors (22576488).

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

19351242 is a wasteful number, since it uses less digits than its factorization.

19351242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075077 (or 1075074 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 19351242 is about 4399.0046601476. The cubic root of 19351242 is about 268.4744417689.

The spelling of 19351242 in words is "nineteen million, three hundred fifty-one thousand, two hundred forty-two".