851472142 has 8 divisors (see below), whose sum is σ = 1277332056. Its totient is φ = 425694792.

The previous prime is 851472131. The next prime is 851472187. The reversal of 851472142 is 241274158.

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

It is a junction number, because it is equal to n+sod(n) for n = 851472098 and 851472107.

It is a congruent 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, 29653 + ... + 50815.

It is an arithmetic number, because the mean of its divisors is an integer number (159666507).

Almost surely, 2^851472142 is an apocalyptic number.

851472142 is a deficient number, since it is larger than the sum of its proper divisors (425859914).

851472142 is a wasteful number, since it uses less digits than its factorization.

851472142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41282.

The product of its digits is 17920, while the sum is 34.

The square root of 851472142 is about 29179.9955791635. The cubic root of 851472142 is about 947.8147897599.

It can be divided in two parts, 8514 and 72142, that added together give a square (80656 = 284²).

The spelling of 851472142 in words is "eight hundred fifty-one million, four hundred seventy-two thousand, one hundred forty-two".