2019700442 has 4 divisors (see below), whose sum is σ = 3029550666. Its totient is φ = 1009850220.

The previous prime is 2019700393. The next prime is 2019700471. The reversal of 2019700442 is 2440079102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2440079102 = 2 ⋅1220039551.

It can be written as a sum of positive squares in only one way, i.e., 1462221121 + 557479321 = 38239^2 + 23611^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504925109 + ... + 504925112.

Almost surely, 2^2019700442 is an apocalyptic number.

2019700442 is a deficient number, since it is larger than the sum of its proper divisors (1009850224).

2019700442 is a wasteful number, since it uses less digits than its factorization.

2019700442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009850223.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 2019700442 is about 44941.0774459180. The cubic root of 2019700442 is about 1264.0443744269.

Adding to 2019700442 its reverse (2440079102), we get a palindrome (4459779544).

The spelling of 2019700442 in words is "two billion, nineteen million, seven hundred thousand, four hundred forty-two".