1403012340 has 60 divisors (see below), whose sum is σ = 4401306756. Its totient is φ = 374136192.

The previous prime is 1403012339. The next prime is 1403012371. The reversal of 1403012340 is 432103041.

It can be written as a sum of positive squares in 2 ways, for example, as 816016356 + 586995984 = 28566^2 + 24228^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 431409 + ... + 434648.

Almost surely, 2^1403012340 is an apocalyptic number.

1403012340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1403012340 is an abundant number, since it is smaller than the sum of its proper divisors (2998294416).

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

1403012340 is a wasteful number, since it uses less digits than its factorization.

1403012340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866078 (or 866067 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1403012340 is about 37456.8063240848. The cubic root of 1403012340 is about 1119.4907176482.

Adding to 1403012340 its reverse (432103041), we get a palindrome (1835115381).

The spelling of 1403012340 in words is "one billion, four hundred three million, twelve thousand, three hundred forty".