1403742340 has 96 divisors (see below), whose sum is σ = 3958020864. Its totient is φ = 403868160.

The previous prime is 1403742323. The next prime is 1403742409. The reversal of 1403742340 is 432473041.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1403742299 and 1403742308.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15039 + ... + 55078.

It is an arithmetic number, because the mean of its divisors is an integer number (41229384).

Almost surely, 2^1403742340 is an apocalyptic number.

1403742340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1403742340 is an abundant number, since it is smaller than the sum of its proper divisors (2554278524).

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

1403742340 is a wasteful number, since it uses less digits than its factorization.

1403742340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70157 (or 70155 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 1403742340 is about 37466.5496142893. The cubic root of 1403742340 is about 1119.6848443627.

The spelling of 1403742340 in words is "one billion, four hundred three million, seven hundred forty-two thousand, three hundred forty".