142540151 has 4 divisors (see below), whose sum is σ = 153504792. Its totient is φ = 131575512.

The previous prime is 142540127. The next prime is 142540159. The reversal of 142540151 is 151045241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151045241 = 509 ⋅296749.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142540151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142540159) 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, 5482301 + ... + 5482326.

It is an arithmetic number, because the mean of its divisors is an integer number (38376198).

Almost surely, 2^142540151 is an apocalyptic number.

142540151 is a deficient number, since it is larger than the sum of its proper divisors (10964641).

142540151 is a wasteful number, since it uses less digits than its factorization.

142540151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10964640.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 142540151 is about 11939.0180081948. The cubic root of 142540151 is about 522.3710155276.

Adding to 142540151 its reverse (151045241), we get a palindrome (293585392).

The spelling of 142540151 in words is "one hundred forty-two million, five hundred forty thousand, one hundred fifty-one".