19649142 has 20 divisors (see below), whose sum is σ = 44028996. Its totient is φ = 6549660.

The previous prime is 19649141. The next prime is 19649219. The reversal of 19649142 is 24194691.

It is a happy number.

19649142 is a `hidden beast` number, since 1 + 9 + 649 + 1 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 19649097 and 19649106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19649141) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 60484 + ... + 60807.

Almost surely, 2^19649142 is an apocalyptic number.

19649142 is an abundant number, since it is smaller than the sum of its proper divisors (24379854).

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

19649142 is a wasteful number, since it uses less digits than its factorization.

19649142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121305 (or 121296 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 19649142 is about 4432.7352729438. The cubic root of 19649142 is about 269.8450963313.

It can be divided in two parts, 19649 and 142, that added together give a palindrome (19791).

The spelling of 19649142 in words is "nineteen million, six hundred forty-nine thousand, one hundred forty-two".