1400204140 has 24 divisors (see below), whose sum is σ = 2967913872. Its totient is φ = 554846400.

The previous prime is 1400204101. The next prime is 1400204147. The reversal of 1400204140 is 414020041.

It is not an unprimeable number, because it can be changed into a prime (1400204147) 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, 325011 + ... + 329290.

It is an arithmetic number, because the mean of its divisors is an integer number (123663078).

Almost surely, 2^1400204140 is an apocalyptic number.

1400204140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400204140 is an abundant number, since it is smaller than the sum of its proper divisors (1567709732).

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

1400204140 is a wasteful number, since it uses less digits than its factorization.

1400204140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654417 (or 654415 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1400204140 is about 37419.3017037999. The cubic root of 1400204140 is about 1118.7433130485.

Adding to 1400204140 its reverse (414020041), we get a palindrome (1814224181).

The spelling of 1400204140 in words is "one billion, four hundred million, two hundred four thousand, one hundred forty".