142023481 has 2 divisors, whose sum is σ = 142023482. Its totient is φ = 142023480.

The previous prime is 142023449. The next prime is 142023487. The reversal of 142023481 is 184320241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110439081 + 31584400 = 10509^2 + 5620^2 .

It is a cyclic number.

It is not a de Polignac number, because 142023481 - 2⁵ = 142023449 is a prime.

It is a super-2 number, since 2×142023481² = 40341338310714722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142023487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71011740 + 71011741.

It is an arithmetic number, because the mean of its divisors is an integer number (71011741).

Almost surely, 2^142023481 is an apocalyptic number.

It is an amenable number.

142023481 is a deficient number, since it is larger than the sum of its proper divisors (1).

142023481 is an equidigital number, since it uses as much as digits as its factorization.

142023481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 142023481 is about 11917.3604879604. The cubic root of 142023481 is about 521.7390995699.

The spelling of 142023481 in words is "one hundred forty-two million, twenty-three thousand, four hundred eighty-one".