1342748881 has 4 divisors (see below), whose sum is σ = 1344805812. Its totient is φ = 1340691952.

The previous prime is 1342748879. The next prime is 1342748951. The reversal of 1342748881 is 1888472431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 864889281 + 477859600 = 29409^2 + 21860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1342748881 - 2¹ = 1342748879 is a prime.

It is a super-2 number, since 2×1342748881² = 3605949114853504322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1342748801) 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 3 ways as a sum of consecutive naturals, for example, 1027486 + ... + 1028791.

It is an arithmetic number, because the mean of its divisors is an integer number (336201453).

Almost surely, 2^1342748881 is an apocalyptic number.

It is an amenable number.

1342748881 is a deficient number, since it is larger than the sum of its proper divisors (2056931).

1342748881 is an equidigital number, since it uses as much as digits as its factorization.

1342748881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056930.

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

The square root of 1342748881 is about 36643.5380524316. The cubic root of 1342748881 is about 1103.2271294733.

The spelling of 1342748881 in words is "one billion, three hundred forty-two million, seven hundred forty-eight thousand, eight hundred eighty-one".