1321478070 has 64 divisors (see below), whose sum is σ = 3463430400. Its totient is φ = 320028800.

The previous prime is 1321478029. The next prime is 1321478071. The reversal of 1321478070 is 708741231.

It is a happy number.

1321478070 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321478071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 517156 + ... + 519704.

It is an arithmetic number, because the mean of its divisors is an integer number (54116100).

Almost surely, 2^1321478070 is an apocalyptic number.

1321478070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321478070 is an abundant number, since it is smaller than the sum of its proper divisors (2141952330).

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

1321478070 is a wasteful number, since it uses less digits than its factorization.

1321478070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1321478070 is about 36352.1398269758. The cubic root of 1321478070 is about 1097.3705985669.

The spelling of 1321478070 in words is "one billion, three hundred twenty-one million, four hundred seventy-eight thousand, seventy".