142778119 has 16 divisors (see below), whose sum is σ = 158257440. Its totient is φ = 127733760.

The previous prime is 142778101. The next prime is 142778123. The reversal of 142778119 is 911877241.

It is not a de Polignac number, because 142778119 - 2¹¹ = 142776071 is a prime.

It is a super-2 number, since 2×142778119² = 40771182530356322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142718119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231099 + ... + 231715.

It is an arithmetic number, because the mean of its divisors is an integer number (9891090).

Almost surely, 2^142778119 is an apocalyptic number.

142778119 is a deficient number, since it is larger than the sum of its proper divisors (15479321).

142778119 is a wasteful number, since it uses less digits than its factorization.

142778119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930.

The product of its digits is 28224, while the sum is 40.

The square root of 142778119 is about 11948.9798309312. The cubic root of 142778119 is about 522.6615499786.

The spelling of 142778119 in words is "one hundred forty-two million, seven hundred seventy-eight thousand, one hundred nineteen".