155272142 has 8 divisors (see below), whose sum is σ = 245166600. Its totient is φ = 73549944.

The previous prime is 155272141. The next prime is 155272147. The reversal of 155272142 is 241272551.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155272141) 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, 2043017 + ... + 2043092.

It is an arithmetic number, because the mean of its divisors is an integer number (30645825).

Almost surely, 2^155272142 is an apocalyptic number.

155272142 is a deficient number, since it is larger than the sum of its proper divisors (89894458).

155272142 is a wasteful number, since it uses less digits than its factorization.

155272142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086130.

The product of its digits is 5600, while the sum is 29.

The square root of 155272142 is about 12460.8242905516. The cubic root of 155272142 is about 537.4827304349.

The spelling of 155272142 in words is "one hundred fifty-five million, two hundred seventy-two thousand, one hundred forty-two".