142805090 has 8 divisors (see below), whose sum is σ = 257049180. Its totient is φ = 57122032.

The previous prime is 142805059. The next prime is 142805111. The reversal of 142805090 is 90508241.

It can be written as a sum of positive squares in 2 ways, for example, as 130393561 + 12411529 = 11419^2 + 3523^2 .

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

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, 7140245 + ... + 7140264.

Almost surely, 2^142805090 is an apocalyptic number.

142805090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142805090 is a deficient number, since it is larger than the sum of its proper divisors (114244090).

142805090 is a wasteful number, since it uses less digits than its factorization.

142805090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14280516.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 142805090 is about 11950.1083677095. The cubic root of 142805090 is about 522.6944584224.

The spelling of 142805090 in words is "one hundred forty-two million, eight hundred five thousand, ninety".