1403142320 has 40 divisors (see below), whose sum is σ = 3263887824. Its totient is φ = 560984832.

The previous prime is 1403142269. The next prime is 1403142329. The reversal of 1403142320 is 232413041.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1403142292 and 1403142301.

It is not an unprimeable number, because it can be changed into a prime (1403142329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278867 + ... + 283853.

Almost surely, 2^1403142320 is an apocalyptic number.

1403142320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1403142320 is an abundant number, since it is smaller than the sum of its proper divisors (1860745504).

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

1403142320 is a wasteful number, since it uses less digits than its factorization.

1403142320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8517 (or 8511 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1403142320 is about 37458.5413490702. The cubic root of 1403142320 is about 1119.5252877671.

Adding to 1403142320 its reverse (232413041), we get a palindrome (1635555361).

The spelling of 1403142320 in words is "one billion, four hundred three million, one hundred forty-two thousand, three hundred twenty".