1506142021 has 2 divisors, whose sum is σ = 1506142022. Its totient is φ = 1506142020.

The previous prime is 1506142003. The next prime is 1506142067. The reversal of 1506142021 is 1202416051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1042385796 + 463756225 = 32286^2 + 21535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1506142021 - 2⁷ = 1506141893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1506141983 and 1506142001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1506140021) 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 as a sum of consecutive naturals, namely, 753071010 + 753071011.

It is an arithmetic number, because the mean of its divisors is an integer number (753071011).

Almost surely, 2^1506142021 is an apocalyptic number.

It is an amenable number.

1506142021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1506142021 is an equidigital number, since it uses as much as digits as its factorization.

1506142021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1506142021 is about 38809.0456079507. The cubic root of 1506142021 is about 1146.2745279563.

Adding to 1506142021 its reverse (1202416051), we get a palindrome (2708558072).

The spelling of 1506142021 in words is "one billion, five hundred six million, one hundred forty-two thousand, twenty-one".