1340401400 has 48 divisors (see below), whose sum is σ = 3356165400. Its totient is φ = 494916480.

The previous prime is 1340401393. The next prime is 1340401411. The reversal of 1340401400 is 41040431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255170 + ... + 260369.

Almost surely, 2^1340401400 is an apocalyptic number.

1340401400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340401400 is an abundant number, since it is smaller than the sum of its proper divisors (2015764000).

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

1340401400 is a wasteful number, since it uses less digits than its factorization.

1340401400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515568 (or 515559 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1340401400 is about 36611.4927311084. The cubic root of 1340401400 is about 1102.5838432885.

Adding to 1340401400 its reverse (41040431), we get a palindrome (1381441831).

The spelling of 1340401400 in words is "one billion, three hundred forty million, four hundred one thousand, four hundred".