16271442 has 80 divisors (see below), whose sum is σ = 41608512. Its totient is φ = 4704480.

The previous prime is 16271347. The next prime is 16271443. The reversal of 16271442 is 24417261.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (16271443) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40788 + ... + 41184.

Almost surely, 2^16271442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16271442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20804256).

16271442 is an abundant number, since it is smaller than the sum of its proper divisors (25337070).

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

16271442 is a wasteful number, since it uses less digits than its factorization.

16271442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 436 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 16271442 is about 4033.7875501816. The cubic root of 16271442 is about 253.4012079595.

It can be divided in two parts, 162 and 71442, that multiplied together give a square (11573604 = 3402²).

The spelling of 16271442 in words is "sixteen million, two hundred seventy-one thousand, four hundred forty-two".