140143408 has 20 divisors (see below), whose sum is σ = 276131880. Its totient is φ = 68883584.

The previous prime is 140143403. The next prime is 140143463. The reversal of 140143408 is 804341041.

It is not an unprimeable number, because it can be changed into a prime (140143403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73285 + ... + 75172.

It is an arithmetic number, because the mean of its divisors is an integer number (13806594).

Almost surely, 2^140143408 is an apocalyptic number.

It is an amenable number.

140143408 is a deficient number, since it is larger than the sum of its proper divisors (135988472).

140143408 is a wasteful number, since it uses less digits than its factorization.

140143408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148524 (or 148518 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 140143408 is about 11838.2181091582. The cubic root of 140143408 is about 519.4266461569.

Adding to 140143408 its reverse (804341041), we get a palindrome (944484449).

The spelling of 140143408 in words is "one hundred forty million, one hundred forty-three thousand, four hundred eight".