143917980 has 24 divisors (see below), whose sum is σ = 402970512. Its totient is φ = 38378112.

The previous prime is 143917979. The next prime is 143917993. The reversal of 143917980 is 89719341.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1199257 + ... + 1199376.

It is an arithmetic number, because the mean of its divisors is an integer number (16790438).

Almost surely, 2^143917980 is an apocalyptic number.

143917980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143917980 is an abundant number, since it is smaller than the sum of its proper divisors (259052532).

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

143917980 is a wasteful number, since it uses less digits than its factorization.

143917980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398645 (or 2398643 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 143917980 is about 11996.5820132236. The cubic root of 143917980 is about 524.0487445671.

The spelling of 143917980 in words is "one hundred forty-three million, nine hundred seventeen thousand, nine hundred eighty".