142289542891 has 4 divisors (see below), whose sum is σ = 145598602072. Its totient is φ = 138980483712.

The previous prime is 142289542841. The next prime is 142289542949. The reversal of 142289542891 is 198245982241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198245982241 = 6037 ⋅32838493.

It is a cyclic number.

It is not a de Polignac number, because 142289542891 - 2⁷ = 142289542763 is a prime.

It is a super-2 number, since 2×142289542891² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142289542831) 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, 1654529526 + ... + 1654529611.

It is an arithmetic number, because the mean of its divisors is an integer number (36399650518).

Almost surely, 2^142289542891 is an apocalyptic number.

142289542891 is a deficient number, since it is larger than the sum of its proper divisors (3309059181).

142289542891 is an equidigital number, since it uses as much as digits as its factorization.

142289542891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309059180.

The product of its digits is 3317760, while the sum is 55.

The spelling of 142289542891 in words is "one hundred forty-two billion, two hundred eighty-nine million, five hundred forty-two thousand, eight hundred ninety-one".