1342887081 has 4 divisors (see below), whose sum is σ = 1790516112. Its totient is φ = 895258052.

The previous prime is 1342887067. The next prime is 1342887083. The reversal of 1342887081 is 1807882431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1807882431 = 3 ⋅602627477.

It is a cyclic number.

It is not a de Polignac number, because 1342887081 - 2⁷ = 1342886953 is a prime.

It is a super-2 number, since 2×1342887081² = 3606691424633401122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1342887083) 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, 223814511 + ... + 223814516.

It is an arithmetic number, because the mean of its divisors is an integer number (447629028).

Almost surely, 2^1342887081 is an apocalyptic number.

It is an amenable number.

1342887081 is a deficient number, since it is larger than the sum of its proper divisors (447629031).

1342887081 is an equidigital number, since it uses as much as digits as its factorization.

1342887081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447629030.

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 1342887081 is about 36645.4237388518. The cubic root of 1342887081 is about 1103.2649773939.

The spelling of 1342887081 in words is "one billion, three hundred forty-two million, eight hundred eighty-seven thousand, eighty-one".