151220129 has 4 divisors (see below), whose sum is σ = 152717460. Its totient is φ = 149722800.

The previous prime is 151220119. The next prime is 151220137. The reversal of 151220129 is 921022151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 921022151 = 7 ⋅131574593.

It can be written as a sum of positive squares in 2 ways, for example, as 87459904 + 63760225 = 9352^2 + 7985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151220129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151220119) by changing a digit.

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, 748514 + ... + 748715.

It is an arithmetic number, because the mean of its divisors is an integer number (38179365).

Almost surely, 2^151220129 is an apocalyptic number.

It is an amenable number.

151220129 is a deficient number, since it is larger than the sum of its proper divisors (1497331).

151220129 is a wasteful number, since it uses less digits than its factorization.

151220129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497330.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 151220129 is about 12297.1593874358. The cubic root of 151220129 is about 532.7660410278.

The spelling of 151220129 in words is "one hundred fifty-one million, two hundred twenty thousand, one hundred twenty-nine".