1501142420 has 24 divisors (see below), whose sum is σ = 3168740904. Its totient is φ = 597344256.

The previous prime is 1501142323. The next prime is 1501142453. The reversal of 1501142420 is 242411051.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 51208336 + 1449934084 = 7156^2 + 38078^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1501142392 and 1501142401.

It is a congruent number.

It is an unprimeable number.

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, 190589 + ... + 198308.

It is an arithmetic number, because the mean of its divisors is an integer number (132030871).

Almost surely, 2^1501142420 is an apocalyptic number.

1501142420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1501142420 is an abundant number, since it is smaller than the sum of its proper divisors (1667598484).

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

1501142420 is a wasteful number, since it uses less digits than its factorization.

1501142420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389099 (or 389097 counting only the distinct ones).

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

The square root of 1501142420 is about 38744.5792337457. The cubic root of 1501142420 is about 1145.0047786837.

Adding to 1501142420 its reverse (242411051), we get a palindrome (1743553471).

The spelling of 1501142420 in words is "one billion, five hundred one million, one hundred forty-two thousand, four hundred twenty".