16031142 has 48 divisors (see below), whose sum is σ = 37000080. Its totient is φ = 5144832.

The previous prime is 16031137. The next prime is 16031143. The reversal of 16031142 is 24113061.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16031143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45238 + ... + 45590.

It is an arithmetic number, because the mean of its divisors is an integer number (770835).

Almost surely, 2^16031142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16031142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18500040).

16031142 is an abundant number, since it is smaller than the sum of its proper divisors (20968938).

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

16031142 is a wasteful number, since it uses less digits than its factorization.

16031142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 16031142 is about 4003.8908576533. The cubic root of 16031142 is about 252.1475892812.

The spelling of 16031142 in words is "sixteen million, thirty-one thousand, one hundred forty-two".