151121420 has 48 divisors (see below), whose sum is σ = 326833920. Its totient is φ = 58670016.

The previous prime is 151121419. The next prime is 151121429. The reversal of 151121420 is 24121151.

It is not an unprimeable number, because it can be changed into a prime (151121429) 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 15 ways as a sum of consecutive naturals, for example, 97169 + ... + 98711.

It is an arithmetic number, because the mean of its divisors is an integer number (6809040).

Almost surely, 2^151121420 is an apocalyptic number.

151121420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151121420 is an abundant number, since it is smaller than the sum of its proper divisors (175712500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151121420 is a wasteful number, since it uses less digits than its factorization.

151121420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694 (or 1692 counting only the distinct ones).

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

The square root of 151121420 is about 12293.1452444035. The cubic root of 151121420 is about 532.6500947137.

Adding to 151121420 its reverse (24121151), we get a palindrome (175242571).

The spelling of 151121420 in words is "one hundred fifty-one million, one hundred twenty-one thousand, four hundred twenty".