1340200040 has 16 divisors (see below), whose sum is σ = 3015450180. Its totient is φ = 536080000.

The previous prime is 1340200031. The next prime is 1340200067. The reversal of 1340200040 is 400020431.

It can be written as a sum of positive squares in 2 ways, for example, as 1221782116 + 118417924 = 34954^2 + 10882^2 .

It is a super-2 number, since 2×1340200040² = 3592272294432003200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1340199988 and 1340200024.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16752461 + ... + 16752540.

Almost surely, 2^1340200040 is an apocalyptic number.

1340200040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340200040 is an abundant number, since it is smaller than the sum of its proper divisors (1675250140).

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

1340200040 is a wasteful number, since it uses less digits than its factorization.

1340200040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33505012 (or 33505008 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1340200040 is about 36608.7426716625. The cubic root of 1340200040 is about 1102.5286291313.

Adding to 1340200040 its reverse (400020431), we get a palindrome (1740220471).

The spelling of 1340200040 in words is "one billion, three hundred forty million, two hundred thousand, forty".