151120421 has 8 divisors (see below), whose sum is σ = 157528800. Its totient is φ = 144791920.

The previous prime is 151120393. The next prime is 151120423. The reversal of 151120421 is 124021151.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151120421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151120421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151120423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16091 + ... + 23688.

It is an arithmetic number, because the mean of its divisors is an integer number (19691100).

Almost surely, 2^151120421 is an apocalyptic number.

It is an amenable number.

151120421 is a deficient number, since it is larger than the sum of its proper divisors (6408379).

151120421 is a wasteful number, since it uses less digits than its factorization.

151120421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39939.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 151120421 is about 12293.1046119359. The cubic root of 151120421 is about 532.6489210027.

Adding to 151120421 its reverse (124021151), we get a palindrome (275141572).

The spelling of 151120421 in words is "one hundred fifty-one million, one hundred twenty thousand, four hundred twenty-one".