47021142 has 32 divisors (see below), whose sum is σ = 108041472. Its totient is φ = 13364064.

The previous prime is 47021129. The next prime is 47021147. The reversal of 47021142 is 24112074.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47021147) 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, 5433 + ... + 11115.

It is an arithmetic number, because the mean of its divisors is an integer number (3376296).

Almost surely, 2^47021142 is an apocalyptic number.

47021142 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

47021142 is an abundant number, since it is smaller than the sum of its proper divisors (61020330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47021142 is a wasteful number, since it uses less digits than its factorization.

47021142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 47021142 is about 6857.1963658627. The cubic root of 47021142 is about 360.9367118178.

It can be divided in two parts, 470 and 21142, that added together give a palindrome (21612).

The spelling of 47021142 in words is "forty-seven million, twenty-one thousand, one hundred forty-two".