150121491 has 8 divisors (see below), whose sum is σ = 215559120. Its totient is φ = 92382432.

The previous prime is 150121463. The next prime is 150121501. The reversal of 150121491 is 194121051.

It is a happy number.

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

It is not a de Polignac number, because 150121491 - 2⁹ = 150120979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (150121091) 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 7 ways as a sum of consecutive naturals, for example, 1924596 + ... + 1924673.

It is an arithmetic number, because the mean of its divisors is an integer number (26944890).

Almost surely, 2^150121491 is an apocalyptic number.

150121491 is a deficient number, since it is larger than the sum of its proper divisors (65437629).

150121491 is a wasteful number, since it uses less digits than its factorization.

150121491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849285.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 150121491 is about 12252.4075593330. The cubic root of 150121491 is about 531.4726941608.

The spelling of 150121491 in words is "one hundred fifty million, one hundred twenty-one thousand, four hundred ninety-one".