155420270 has 8 divisors (see below), whose sum is σ = 279756504. Its totient is φ = 62168104.

The previous prime is 155420263. The next prime is 155420281. The reversal of 155420270 is 72024551.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7771004 + ... + 7771023.

It is an arithmetic number, because the mean of its divisors is an integer number (34969563).

Almost surely, 2^155420270 is an apocalyptic number.

155420270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155420270 is a deficient number, since it is larger than the sum of its proper divisors (124336234).

155420270 is a wasteful number, since it uses less digits than its factorization.

155420270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15542034.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 155420270 is about 12466.7666217027. The cubic root of 155420270 is about 537.6535937475.

The spelling of 155420270 in words is "one hundred fifty-five million, four hundred twenty thousand, two hundred seventy".