142978416 has 80 divisors (see below), whose sum is σ = 424639488. Its totient is φ = 40608000.

The previous prime is 142978403. The next prime is 142978421. The reversal of 142978416 is 614879241.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59641 + ... + 61991.

Almost surely, 2^142978416 is an apocalyptic number.

142978416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142978416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212319744).

142978416 is an abundant number, since it is smaller than the sum of its proper divisors (281661072).

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

142978416 is a wasteful number, since it uses less digits than its factorization.

142978416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550 (or 2544 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 142978416 is about 11957.3582366675. The cubic root of 142978416 is about 522.9058419040.

The spelling of 142978416 in words is "one hundred forty-two million, nine hundred seventy-eight thousand, four hundred sixteen".