145134898 has 4 divisors (see below), whose sum is σ = 217702350. Its totient is φ = 72567448.

The previous prime is 145134887. The next prime is 145134943. The reversal of 145134898 is 898431541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898431541 = 7 ⋅128347363.

It can be written as a sum of positive squares in only one way, i.e., 99261369 + 45873529 = 9963^2 + 6773^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36283723 + ... + 36283726.

Almost surely, 2^145134898 is an apocalyptic number.

145134898 is a deficient number, since it is larger than the sum of its proper divisors (72567452).

145134898 is an equidigital number, since it uses as much as digits as its factorization.

145134898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72567451.

The product of its digits is 138240, while the sum is 43.

The square root of 145134898 is about 12047.1946111948. The cubic root of 145134898 is about 525.5216559471.

The spelling of 145134898 in words is "one hundred forty-five million, one hundred thirty-four thousand, eight hundred ninety-eight".