19500142 has 4 divisors (see below), whose sum is σ = 29250216. Its totient is φ = 9750070.

The previous prime is 19500127. The next prime is 19500157. The reversal of 19500142 is 24100591.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (19500127) and next prime (19500157).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4875034 + ... + 4875037.

It is an arithmetic number, because the mean of its divisors is an integer number (7312554).

Almost surely, 2^19500142 is an apocalyptic number.

19500142 is a deficient number, since it is larger than the sum of its proper divisors (9750074).

19500142 is an equidigital number, since it uses as much as digits as its factorization.

19500142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9750073.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 19500142 is about 4415.8965114685. The cubic root of 19500142 is about 269.1612839500.

The spelling of 19500142 in words is "nineteen million, five hundred thousand, one hundred forty-two".