1340421888 has 72 divisors (see below), whose sum is σ = 3841926928. Its totient is φ = 412434432.

The previous prime is 1340421877. The next prime is 1340421911. The reversal of 1340421888 is 8881240431.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57145 + ... + 77112.

Almost surely, 2^1340421888 is an apocalyptic number.

It is an amenable number.

1340421888 is an abundant number, since it is smaller than the sum of its proper divisors (2501505040).

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

1340421888 is a wasteful number, since it uses less digits than its factorization.

1340421888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134289 (or 134275 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 1340421888 is about 36611.7725328889. The cubic root of 1340421888 is about 1102.5894609149.

The spelling of 1340421888 in words is "one billion, three hundred forty million, four hundred twenty-one thousand, eight hundred eighty-eight".