1340542004 has 12 divisors (see below), whose sum is σ = 2483945604. Its totient is φ = 630843264.

The previous prime is 1340542003. The next prime is 1340542031. The reversal of 1340542004 is 4002450431.

It can be written as a sum of positive squares in 2 ways, for example, as 619512100 + 721029904 = 24890^2 + 26852^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340542003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9856859 + ... + 9856994.

It is an arithmetic number, because the mean of its divisors is an integer number (206995467).

Almost surely, 2^1340542004 is an apocalyptic number.

It is an amenable number.

1340542004 is a deficient number, since it is larger than the sum of its proper divisors (1143403600).

1340542004 is a wasteful number, since it uses less digits than its factorization.

1340542004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19713874 (or 19713872 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1340542004 is about 36613.4128974615. The cubic root of 1340542004 is about 1102.6223944962.

Adding to 1340542004 its reverse (4002450431), we get a palindrome (5342992435).

The spelling of 1340542004 in words is "one billion, three hundred forty million, five hundred forty-two thousand, four".