1501123420 has 24 divisors (see below), whose sum is σ = 3153805200. Its totient is φ = 600173952.

The previous prime is 1501123397. The next prime is 1501123423. The reversal of 1501123420 is 243211051.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1501123423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30736 + ... + 62824.

It is an arithmetic number, because the mean of its divisors is an integer number (131408550).

Almost surely, 2^1501123420 is an apocalyptic number.

1501123420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1501123420 is an abundant number, since it is smaller than the sum of its proper divisors (1652681780).

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

1501123420 is a wasteful number, since it uses less digits than its factorization.

1501123420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34437 (or 34435 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1501123420 is about 38744.3340373789. The cubic root of 1501123420 is about 1144.9999478779. Note that the first 4 decimals are identical.

Adding to 1501123420 its reverse (243211051), we get a palindrome (1744334471).

The spelling of 1501123420 in words is "one billion, five hundred one million, one hundred twenty-three thousand, four hundred twenty".