1400542900 has 18 divisors (see below), whose sum is σ = 3039178310. Its totient is φ = 560217120.

The previous prime is 1400542879. The next prime is 1400542901. The reversal of 1400542900 is 92450041.

It can be written as a sum of positive squares in 3 ways, for example, as 41293476 + 1359249424 = 6426^2 + 36868^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400542901) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 7002615 + ... + 7002814.

Almost surely, 2^1400542900 is an apocalyptic number.

1400542900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400542900 is an abundant number, since it is smaller than the sum of its proper divisors (1638635410).

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

1400542900 is a wasteful number, since it uses less digits than its factorization.

1400542900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14005443 (or 14005436 counting only the distinct ones).

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

The square root of 1400542900 is about 37423.8279709599. The cubic root of 1400542900 is about 1118.8335272571.

Adding to 1400542900 its reverse (92450041), we get a palindrome (1492992941).

The spelling of 1400542900 in words is "one billion, four hundred million, five hundred forty-two thousand, nine hundred".