1405315420 has 24 divisors (see below), whose sum is σ = 2952046944. Its totient is φ = 561957696.

The previous prime is 1405315409. The next prime is 1405315427. The reversal of 1405315420 is 245135041.

It is a happy number.

It is a super-2 number, since 2×1405315420² = 3949822859379552800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405315427) 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, 74689 + ... + 91591.

It is an arithmetic number, because the mean of its divisors is an integer number (123001956).

Almost surely, 2^1405315420 is an apocalyptic number.

1405315420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1405315420 is an abundant number, since it is smaller than the sum of its proper divisors (1546731524).

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

1405315420 is a wasteful number, since it uses less digits than its factorization.

1405315420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21069 (or 21067 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1405315420 is about 37487.5368622693. The cubic root of 1405315420 is about 1120.1029401557.

The spelling of 1405315420 in words is "one billion, four hundred five million, three hundred fifteen thousand, four hundred twenty".