16128742 has 24 divisors (see below), whose sum is σ = 29056320. Its totient is φ = 6688080.

The previous prime is 16128731. The next prime is 16128743. The reversal of 16128742 is 24782161.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16128743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384 + ... + 5692.

It is an arithmetic number, because the mean of its divisors is an integer number (1210680).

Almost surely, 2^16128742 is an apocalyptic number.

16128742 is a deficient number, since it is larger than the sum of its proper divisors (12927578).

16128742 is a wasteful number, since it uses less digits than its factorization.

16128742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356 (or 5349 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 16128742 is about 4016.0605075123. The cubic root of 16128742 is about 252.6582584656.

The spelling of 16128742 in words is "sixteen million, one hundred twenty-eight thousand, seven hundred forty-two".