1321424670 has 32 divisors (see below), whose sum is σ = 3248773920. Its totient is φ = 343784960.

The previous prime is 1321424659. The next prime is 1321424677. The reversal of 1321424670 is 764241231.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321424677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535935 + ... + 538394.

It is an arithmetic number, because the mean of its divisors is an integer number (101524185).

Almost surely, 2^1321424670 is an apocalyptic number.

1321424670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321424670 is an abundant number, since it is smaller than the sum of its proper divisors (1927349250).

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

1321424670 is a wasteful number, since it uses less digits than its factorization.

1321424670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074380.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 1321424670 is about 36351.4053373456. The cubic root of 1321424670 is about 1097.3558170429.

The spelling of 1321424670 in words is "one billion, three hundred twenty-one million, four hundred twenty-four thousand, six hundred seventy".