142471505 has 16 divisors (see below), whose sum is σ = 192526848. Its totient is φ = 100272000.

The previous prime is 142471501. The next prime is 142471507. The reversal of 142471505 is 505174241.

It is not a de Polignac number, because 142471505 - 2² = 142471501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142471501) 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, 40076 + ... + 43485.

It is an arithmetic number, because the mean of its divisors is an integer number (12032928).

Almost surely, 2^142471505 is an apocalyptic number.

It is an amenable number.

142471505 is a deficient number, since it is larger than the sum of its proper divisors (50055343).

142471505 is a wasteful number, since it uses less digits than its factorization.

142471505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83608.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 142471505 is about 11936.1428024299. The cubic root of 142471505 is about 522.2871457351.

The spelling of 142471505 in words is "one hundred forty-two million, four hundred seventy-one thousand, five hundred five".