145134378 has 24 divisors (see below), whose sum is σ = 315011268. Its totient is φ = 48292992.

The previous prime is 145134373. The next prime is 145134391. The reversal of 145134378 is 873431541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 140351409 + 4782969 = 11847^2 + 2187^2 .

It is not an unprimeable number, because it can be changed into a prime (145134373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3876 + ... + 17472.

Almost surely, 2^145134378 is an apocalyptic number.

145134378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145134378 is an abundant number, since it is smaller than the sum of its proper divisors (169876890).

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

145134378 is a wasteful number, since it uses less digits than its factorization.

145134378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14198 (or 14195 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 145134378 is about 12047.1730293874. The cubic root of 145134378 is about 525.5210283205.

The spelling of 145134378 in words is "one hundred forty-five million, one hundred thirty-four thousand, three hundred seventy-eight".