1342884781 has 16 divisors (see below), whose sum is σ = 1576874880. Its totient is φ = 1119836160.

The previous prime is 1342884769. The next prime is 1342884787. The reversal of 1342884781 is 1874882431.

It is a cyclic number.

It is not a de Polignac number, because 1342884781 - 2⁵ = 1342884749 is a prime.

It is a super-2 number, since 2×1342884781² = 3606679070082835922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342884787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23301 + ... + 56821.

It is an arithmetic number, because the mean of its divisors is an integer number (98554680).

Almost surely, 2^1342884781 is an apocalyptic number.

It is an amenable number.

1342884781 is a deficient number, since it is larger than the sum of its proper divisors (233990099).

1342884781 is an equidigital number, since it uses as much as digits as its factorization.

1342884781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33684.

The product of its digits is 344064, while the sum is 46.

The square root of 1342884781 is about 36645.3923570208. The cubic root of 1342884781 is about 1103.2643475293.

The spelling of 1342884781 in words is "one billion, three hundred forty-two million, eight hundred eighty-four thousand, seven hundred eighty-one".