125442155 has 8 divisors (see below), whose sum is σ = 151992672. Its totient is φ = 99379008.

The previous prime is 125442143. The next prime is 125442203. The reversal of 125442155 is 551244521.

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

It is a cyclic number.

It is not a de Polignac number, because 125442155 - 2¹⁰ = 125441131 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121274 + ... + 122303.

It is an arithmetic number, because the mean of its divisors is an integer number (18999084).

Almost surely, 2^125442155 is an apocalyptic number.

125442155 is a deficient number, since it is larger than the sum of its proper divisors (26550517).

125442155 is a wasteful number, since it uses less digits than its factorization.

125442155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243685.

The product of its digits is 8000, while the sum is 29.

The square root of 125442155 is about 11200.0962049440. The cubic root of 125442155 is about 500.5888462480.

Adding to 125442155 its reverse (551244521), we get a palindrome (676686676).

The spelling of 125442155 in words is "one hundred twenty-five million, four hundred forty-two thousand, one hundred fifty-five".