142905719 has 6 divisors (see below), whose sum is σ = 157078320. Its totient is φ = 129914180.

The previous prime is 142905701. The next prime is 142905731. The reversal of 142905719 is 917509241.

It is not a de Polignac number, because 142905719 - 2¹² = 142901623 is a prime.

It is a super-2 number, since 2×142905719² = 40844089045813922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142905779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 590399 + ... + 590640.

It is an arithmetic number, because the mean of its divisors is an integer number (26179720).

Almost surely, 2^142905719 is an apocalyptic number.

142905719 is a deficient number, since it is larger than the sum of its proper divisors (14172601).

142905719 is a wasteful number, since it uses less digits than its factorization.

142905719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181061 (or 1181050 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 142905719 is about 11954.3180064778. The cubic root of 142905719 is about 522.8172035124.

The spelling of 142905719 in words is "one hundred forty-two million, nine hundred five thousand, seven hundred nineteen".