142921453 has 4 divisors (see below), whose sum is σ = 142945408. Its totient is φ = 142897500.

The previous prime is 142921447. The next prime is 142921463. The reversal of 142921453 is 354129241.

142921453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 354129241 = 10631 ⋅33311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142921453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142921463) 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, 4900 + ... + 17602.

It is an arithmetic number, because the mean of its divisors is an integer number (35736352).

Almost surely, 2^142921453 is an apocalyptic number.

It is an amenable number.

142921453 is a deficient number, since it is larger than the sum of its proper divisors (23955).

142921453 is a wasteful number, since it uses less digits than its factorization.

142921453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23954.

The product of its digits is 8640, while the sum is 31.

The square root of 142921453 is about 11954.9760769313. The cubic root of 142921453 is about 522.8363902976.

The spelling of 142921453 in words is "one hundred forty-two million, nine hundred twenty-one thousand, four hundred fifty-three".