142223461 has 2 divisors, whose sum is σ = 142223462. Its totient is φ = 142223460.

The previous prime is 142223447. The next prime is 142223503. The reversal of 142223461 is 164322241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100620961 + 41602500 = 10031^2 + 6450^2 .

It is a cyclic number.

It is not a de Polignac number, because 142223461 - 2¹⁵ = 142190693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142223401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71111730 + 71111731.

It is an arithmetic number, because the mean of its divisors is an integer number (71111731).

Almost surely, 2^142223461 is an apocalyptic number.

It is an amenable number.

142223461 is a deficient number, since it is larger than the sum of its proper divisors (1).

142223461 is an equidigital number, since it uses as much as digits as its factorization.

142223461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 142223461 is about 11925.7478172230. The cubic root of 142223461 is about 521.9838676674.

The spelling of 142223461 in words is "one hundred forty-two million, two hundred twenty-three thousand, four hundred sixty-one".