151224140 has 12 divisors (see below), whose sum is σ = 317570736. Its totient is φ = 60489648.

The previous prime is 151224137. The next prime is 151224179. The reversal of 151224140 is 41422151.

It is a happy number.

151224140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 7561207 = 151224140 / (1 + 5 + 1 + 2 + 2 + 4 + 1 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3780584 + ... + 3780623.

It is an arithmetic number, because the mean of its divisors is an integer number (26464228).

Almost surely, 2^151224140 is an apocalyptic number.

151224140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151224140 is an abundant number, since it is smaller than the sum of its proper divisors (166346596).

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

151224140 is a wasteful number, since it uses less digits than its factorization.

151224140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7561216 (or 7561214 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 151224140 is about 12297.3224727987. The cubic root of 151224140 is about 532.7707513921.

Adding to 151224140 its reverse (41422151), we get a palindrome (192646291).

It can be divided in two parts, 1512 and 24140, that added together give a palindrome (25652).

The spelling of 151224140 in words is "one hundred fifty-one million, two hundred twenty-four thousand, one hundred forty".