1400143240 has 32 divisors (see below), whose sum is σ = 3159869760. Its totient is φ = 558360000.

The previous prime is 1400143223. The next prime is 1400143249. The reversal of 1400143240 is 423410041.

It is not an unprimeable number, because it can be changed into a prime (1400143249) 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, 39636 + ... + 66115.

It is an arithmetic number, because the mean of its divisors is an integer number (98745930).

Almost surely, 2^1400143240 is an apocalyptic number.

1400143240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400143240 is an abundant number, since it is smaller than the sum of its proper divisors (1759726520).

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

1400143240 is a wasteful number, since it uses less digits than its factorization.

1400143240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106093 (or 106089 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1400143240 is about 37418.4879437959. The cubic root of 1400143240 is about 1118.7270934003.

Adding to 1400143240 its reverse (423410041), we get a palindrome (1823553281).

The spelling of 1400143240 in words is "one billion, four hundred million, one hundred forty-three thousand, two hundred forty".