142466521 has 4 divisors (see below), whose sum is σ = 143491600. Its totient is φ = 141441444.

The previous prime is 142466461. The next prime is 142466543. The reversal of 142466521 is 125664241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 125664241 = 83 ⋅1514027.

It is a cyclic number.

It is not a de Polignac number, because 142466521 - 2¹⁷ = 142335449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142466591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512331 + ... + 512608.

It is an arithmetic number, because the mean of its divisors is an integer number (35872900).

Almost surely, 2^142466521 is an apocalyptic number.

It is an amenable number.

142466521 is a deficient number, since it is larger than the sum of its proper divisors (1025079).

142466521 is a wasteful number, since it uses less digits than its factorization.

142466521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025078.

The product of its digits is 11520, while the sum is 31.

The square root of 142466521 is about 11935.9340229410. The cubic root of 142466521 is about 522.2810553722.

The spelling of 142466521 in words is "one hundred forty-two million, four hundred sixty-six thousand, five hundred twenty-one".