143920740 has 24 divisors (see below), whose sum is σ = 402978240. Its totient is φ = 38378848.

The previous prime is 143920727. The next prime is 143920747. The reversal of 143920740 is 47029341.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 143920698 and 143920707.

It is not an unprimeable number, because it can be changed into a prime (143920747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1199280 + ... + 1199399.

It is an arithmetic number, because the mean of its divisors is an integer number (16790760).

Almost surely, 2^143920740 is an apocalyptic number.

143920740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143920740 is an abundant number, since it is smaller than the sum of its proper divisors (259057500).

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

143920740 is a wasteful number, since it uses less digits than its factorization.

143920740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398691 (or 2398689 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 143920740 is about 11996.6970454371. The cubic root of 143920740 is about 524.0520945430.

The spelling of 143920740 in words is "one hundred forty-three million, nine hundred twenty thousand, seven hundred forty".