142266619 has 4 divisors (see below), whose sum is σ = 155199960. Its totient is φ = 129333280.

The previous prime is 142266601. The next prime is 142266629. The reversal of 142266619 is 916662241.

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

It is a cyclic number.

It is not a de Polignac number, because 142266619 - 2⁷ = 142266491 is a prime.

It is a super-2 number, since 2×142266619² = 40479581763382322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142266629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6466654 + ... + 6466675.

It is an arithmetic number, because the mean of its divisors is an integer number (38799990).

Almost surely, 2^142266619 is an apocalyptic number.

142266619 is a deficient number, since it is larger than the sum of its proper divisors (12933341).

142266619 is a wasteful number, since it uses less digits than its factorization.

142266619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12933340.

The product of its digits is 31104, while the sum is 37.

The square root of 142266619 is about 11927.5571262518. The cubic root of 142266619 is about 522.0366613516.

The spelling of 142266619 in words is "one hundred forty-two million, two hundred sixty-six thousand, six hundred nineteen".