155142895 has 8 divisors (see below), whose sum is σ = 192591360. Its totient is φ = 119834400.

The previous prime is 155142877. The next prime is 155142899. The reversal of 155142895 is 598241551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155142895 - 2⁵ = 155142863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155142899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534831 + ... + 535120.

It is an arithmetic number, because the mean of its divisors is an integer number (24073920).

Almost surely, 2^155142895 is an apocalyptic number.

155142895 is a deficient number, since it is larger than the sum of its proper divisors (37448465).

155142895 is a wasteful number, since it uses less digits than its factorization.

155142895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069985.

The product of its digits is 72000, while the sum is 40.

The square root of 155142895 is about 12455.6370772434. The cubic root of 155142895 is about 537.3335572621. Note that the first 3 decimals are identical.

The spelling of 155142895 in words is "one hundred fifty-five million, one hundred forty-two thousand, eight hundred ninety-five".