142465306421 has 4 divisors (see below), whose sum is σ = 142466105292. Its totient is φ = 142464507552.

The previous prime is 142465306409. The next prime is 142465306433. The reversal of 142465306421 is 124603564241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (142465306409) and next prime (142465306433).

It can be written as a sum of positive squares in 2 ways, for example, as 90504103921 + 51961202500 = 300839^2 + 227950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142465306421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142465306441) 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 3 ways as a sum of consecutive naturals, for example, 3665 + ... + 533801.

It is an arithmetic number, because the mean of its divisors is an integer number (35616526323).

Almost surely, 2^142465306421 is an apocalyptic number.

It is an amenable number.

142465306421 is a deficient number, since it is larger than the sum of its proper divisors (798871).

142465306421 is an equidigital number, since it uses as much as digits as its factorization.

142465306421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798870.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 142465306421 in words is "one hundred forty-two billion, four hundred sixty-five million, three hundred six thousand, four hundred twenty-one".