142540155 has 96 divisors (see below), whose sum is σ = 278014464. Its totient is φ = 69797376.

The previous prime is 142540127. The next prime is 142540159. The reversal of 142540155 is 551045241.

It is not a de Polignac number, because 142540155 - 2⁶ = 142540091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 95 ways as a sum of consecutive naturals, for example, 1383834 + ... + 1383936.

It is an arithmetic number, because the mean of its divisors is an integer number (2895984).

Almost surely, 2^142540155 is an apocalyptic number.

142540155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142540155 is a deficient number, since it is larger than the sum of its proper divisors (135474309).

142540155 is a wasteful number, since it uses less digits than its factorization.

142540155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 142540155 is about 11939.0181757128. The cubic root of 142540155 is about 522.3710204139.

Adding to 142540155 its reverse (551045241), we get a palindrome (693585396).

The spelling of 142540155 in words is "one hundred forty-two million, five hundred forty thousand, one hundred fifty-five".