145142142157 has 4 divisors (see below), whose sum is σ = 145237443840. Its totient is φ = 145046840476.

The previous prime is 145142142107. The next prime is 145142142181. The reversal of 145142142157 is 751241241541.

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.

It is a cyclic number.

It is not a de Polignac number, because 145142142157 - 2⁷ = 145142142029 is a prime.

It is a super-2 number, since 2×145142142157² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145142142107) 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, 47648557 + ... + 47651602.

It is an arithmetic number, because the mean of its divisors is an integer number (36309360960).

Almost surely, 2^145142142157 is an apocalyptic number.

It is an amenable number.

145142142157 is a deficient number, since it is larger than the sum of its proper divisors (95301683).

145142142157 is an equidigital number, since it uses as much as digits as its factorization.

145142142157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95301682.

The product of its digits is 44800, while the sum is 37.

Adding to 145142142157 its reverse (751241241541), we get a palindrome (896383383698).

The spelling of 145142142157 in words is "one hundred forty-five billion, one hundred forty-two million, one hundred forty-two thousand, one hundred fifty-seven".