19042407 has 6 divisors (see below), whose sum is σ = 27505712. Its totient is φ = 12694932.

The previous prime is 19042393. The next prime is 19042411. The reversal of 19042407 is 70424091.

It is a happy number.

It is not a de Polignac number, because 19042407 - 2⁶ = 19042343 is a prime.

It is a super-2 number, since 2×19042407² = 725226528707298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19042417) 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, 1057903 + ... + 1057920.

Almost surely, 2^19042407 is an apocalyptic number.

19042407 is a deficient number, since it is larger than the sum of its proper divisors (8463305).

19042407 is a wasteful number, since it uses less digits than its factorization.

19042407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115829 (or 2115826 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 19042407 is about 4363.7606487982. The cubic root of 19042407 is about 267.0385417577.

Adding to 19042407 its reverse (70424091), we get a palindrome (89466498).

The spelling of 19042407 in words is "nineteen million, forty-two thousand, four hundred seven".