142305770 has 8 divisors (see below), whose sum is σ = 256150404. Its totient is φ = 56922304.

The previous prime is 142305769. The next prime is 142305799. The reversal of 142305770 is 77503241.

It can be written as a sum of positive squares in 2 ways, for example, as 142253329 + 52441 = 11927^2 + 229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×142305770³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7115279 + ... + 7115298.

Almost surely, 2^142305770 is an apocalyptic number.

142305770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142305770 is a deficient number, since it is larger than the sum of its proper divisors (113844634).

142305770 is a wasteful number, since it uses less digits than its factorization.

142305770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14230584.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 142305770 is about 11929.1982127887. The cubic root of 142305770 is about 522.0845441764.

The spelling of 142305770 in words is "one hundred forty-two million, three hundred five thousand, seven hundred seventy".