143115640 has 16 divisors (see below), whose sum is σ = 322010280. Its totient is φ = 57246240.

The previous prime is 143115631. The next prime is 143115659. The reversal of 143115640 is 46511341.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1788906 + ... + 1788985.

Almost surely, 2^143115640 is an apocalyptic number.

143115640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143115640 is an abundant number, since it is smaller than the sum of its proper divisors (178894640).

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

143115640 is a wasteful number, since it uses less digits than its factorization.

143115640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577902 (or 3577898 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 143115640 is about 11963.0949172862. The cubic root of 143115640 is about 523.0730752756.

Adding to 143115640 its reverse (46511341), we get a palindrome (189626981).

It can be divided in two parts, 1431 and 15640, that added together give a palindrome (17071).

The spelling of 143115640 in words is "one hundred forty-three million, one hundred fifteen thousand, six hundred forty".