145423134 has 64 divisors (see below), whose sum is σ = 344692800. Its totient is φ = 45287424.

The previous prime is 145423111. The next prime is 145423147. The reversal of 145423134 is 431324541.

It is a happy number.

It is a super-2 number, since 2×145423134² = 42295775804763912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 145423098 and 145423107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143622 + ... + 144630.

It is an arithmetic number, because the mean of its divisors is an integer number (5385825).

Almost surely, 2^145423134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145423134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172346400).

145423134 is an abundant number, since it is smaller than the sum of its proper divisors (199269666).

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

145423134 is a wasteful number, since it uses less digits than its factorization.

145423134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194 (or 1188 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 145423134 is about 12059.1514626859. The cubic root of 145423134 is about 525.8693189313.

Adding to 145423134 its reverse (431324541), we get a palindrome (576747675).

The spelling of 145423134 in words is "one hundred forty-five million, four hundred twenty-three thousand, one hundred thirty-four".