19862242 has 4 divisors (see below), whose sum is σ = 29793366. Its totient is φ = 9931120.

The previous prime is 19862233. The next prime is 19862243. The reversal of 19862242 is 24226891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24226891 = 13 ⋅1863607.

It can be written as a sum of positive squares in only one way, i.e., 16654561 + 3207681 = 4081^2 + 1791^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19862198 and 19862207.

It is not an unprimeable number, because it can be changed into a prime (19862243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4965559 + ... + 4965562.

Almost surely, 2^19862242 is an apocalyptic number.

19862242 is a deficient number, since it is larger than the sum of its proper divisors (9931124).

19862242 is an equidigital number, since it uses as much as digits as its factorization.

19862242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9931123.

The product of its digits is 13824, while the sum is 34.

The square root of 19862242 is about 4456.7075291071. The cubic root of 19862242 is about 270.8171040268.

The spelling of 19862242 in words is "nineteen million, eight hundred sixty-two thousand, two hundred forty-two".