9042156420 has 96 divisors (see below), whose sum is σ = 27641005056. Its totient is φ = 2190345600.

The previous prime is 9042156391. The next prime is 9042156427. The reversal of 9042156420 is 246512409.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (9042156427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 992727 + ... + 1001793.

It is an arithmetic number, because the mean of its divisors is an integer number (287927136).

Almost surely, 2^9042156420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9042156420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13820502528).

9042156420 is an abundant number, since it is smaller than the sum of its proper divisors (18598848636).

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

9042156420 is a wasteful number, since it uses less digits than its factorization.

9042156420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10601 (or 10599 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 9042156420 is about 95090.2540747473. The cubic root of 9042156420 is about 2083.3265019225.

Adding to 9042156420 its reverse (246512409), we get a palindrome (9288668829).

The spelling of 9042156420 in words is "nine billion, forty-two million, one hundred fifty-six thousand, four hundred twenty".