142121454 has 8 divisors (see below), whose sum is σ = 284242920. Its totient is φ = 47373816.

The previous prime is 142121449. The next prime is 142121459. The reversal of 142121454 is 454121241.

It is an interprime number because it is at equal distance from previous prime (142121449) and next prime (142121459).

It is a sphenic number, since it is the product of 3 distinct primes.

142121454 is an admirable 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 (142121459) 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, 11843449 + ... + 11843460.

It is an arithmetic number, because the mean of its divisors is an integer number (35530365).

Almost surely, 2^142121454 is an apocalyptic number.

142121454 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142121454 is a wasteful number, since it uses less digits than its factorization.

142121454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23686914.

The product of its digits is 1280, while the sum is 24.

The square root of 142121454 is about 11921.4702952278. The cubic root of 142121454 is about 521.8590435749.

Adding to 142121454 its reverse (454121241), we get a palindrome (596242695).

The spelling of 142121454 in words is "one hundred forty-two million, one hundred twenty-one thousand, four hundred fifty-four".