19142431 has 16 divisors (see below), whose sum is σ = 24514560. Its totient is φ = 14510880.

The previous prime is 19142413. The next prime is 19142437. The reversal of 19142431 is 13424191.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19142431 - 2⁵ = 19142399 is a prime.

It is a super-2 number, since 2×19142431² = 732865329179522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19142396 and 19142405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19142437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511 + ... + 6208.

It is an arithmetic number, because the mean of its divisors is an integer number (1532160).

Almost surely, 2^19142431 is an apocalyptic number.

19142431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

19142431 is a deficient number, since it is larger than the sum of its proper divisors (5372129).

19142431 is a wasteful number, since it uses less digits than its factorization.

19142431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774.

The product of its digits is 864, while the sum is 25.

The square root of 19142431 is about 4375.2063951315. The cubic root of 19142431 is about 267.5052830354.

The spelling of 19142431 in words is "nineteen million, one hundred forty-two thousand, four hundred thirty-one".