145421134 has 8 divisors (see below), whose sum is σ = 227615760. Its totient is φ = 69549216.

The previous prime is 145421123. The next prime is 145421147. The reversal of 145421134 is 431124541.

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

It is a super-2 number, since 2×145421134² = 42294612427691912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145421099 and 145421108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580619 + ... + 1580710.

It is an arithmetic number, because the mean of its divisors is an integer number (28451970).

Almost surely, 2^145421134 is an apocalyptic number.

145421134 is a deficient number, since it is larger than the sum of its proper divisors (82194626).

145421134 is a wasteful number, since it uses less digits than its factorization.

145421134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161354.

The product of its digits is 1920, while the sum is 25.

The square root of 145421134 is about 12059.0685378266. The cubic root of 145421134 is about 525.8669081652.

Adding to 145421134 its reverse (431124541), we get a palindrome (576545675).

The spelling of 145421134 in words is "one hundred forty-five million, four hundred twenty-one thousand, one hundred thirty-four".