145122454 has 8 divisors (see below), whose sum is σ = 217743480. Its totient is φ = 72541296.

The previous prime is 145122449. The next prime is 145122457. The reversal of 145122454 is 454221541.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145122457) 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, 2017 + ... + 17155.

It is an arithmetic number, because the mean of its divisors is an integer number (27217935).

Almost surely, 2^145122454 is an apocalyptic number.

145122454 is a deficient number, since it is larger than the sum of its proper divisors (72621026).

145122454 is a wasteful number, since it uses less digits than its factorization.

145122454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19934.

The product of its digits is 6400, while the sum is 28.

The square root of 145122454 is about 12046.6781313356. The cubic root of 145122454 is about 525.5066359474.

Adding to 145122454 its reverse (454221541), we get a palindrome (599343995).

The spelling of 145122454 in words is "one hundred forty-five million, one hundred twenty-two thousand, four hundred fifty-four".