1400140250 has 16 divisors (see below), whose sum is σ = 2621063016. Its totient is φ = 560056000.

The previous prime is 1400140223. The next prime is 1400140289. The reversal of 1400140250 is 520410041.

It can be written as a sum of positive squares in 4 ways, for example, as 270306481 + 1129833769 = 16441^2 + 33613^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2800031 + ... + 2800530.

Almost surely, 2^1400140250 is an apocalyptic number.

1400140250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1400140250 is a deficient number, since it is larger than the sum of its proper divisors (1220922766).

1400140250 is an equidigital number, since it uses as much as digits as its factorization.

1400140250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600578 (or 5600568 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1400140250 is about 37418.4479902628. The cubic root of 1400140250 is about 1118.7262970541.

Adding to 1400140250 its reverse (520410041), we get a palindrome (1920550291).

The spelling of 1400140250 in words is "one billion, four hundred million, one hundred forty thousand, two hundred fifty".