19742875 has 16 divisors (see below), whose sum is σ = 25066080. Its totient is φ = 15520800.

The previous prime is 19742869. The next prime is 19742887. The reversal of 19742875 is 57824791.

It is not a de Polignac number, because 19742875 - 2⁷ = 19742747 is a prime.

It is a super-2 number, since 2×19742875² = 779562226531250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6037 + ... + 8713.

It is an arithmetic number, because the mean of its divisors is an integer number (1566630).

Almost surely, 2^19742875 is an apocalyptic number.

19742875 is a deficient number, since it is larger than the sum of its proper divisors (5323205).

19742875 is an equidigital number, since it uses as much as digits as its factorization.

19742875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751 (or 2741 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 19742875 is about 4443.2955112169. The cubic root of 19742875 is about 270.2734997249.

The spelling of 19742875 in words is "nineteen million, seven hundred forty-two thousand, eight hundred seventy-five".