145243434 has 16 divisors (see below), whose sum is σ = 331985088. Its totient is φ = 41498112.

The previous prime is 145243411. The next prime is 145243447. The reversal of 145243434 is 434342541.

It is a super-2 number, since 2×145243434² = 42191310240224712, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1729047 + ... + 1729130.

It is an arithmetic number, because the mean of its divisors is an integer number (20749068).

Almost surely, 2^145243434 is an apocalyptic number.

145243434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

145243434 is an abundant number, since it is smaller than the sum of its proper divisors (186741654).

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

145243434 is a wasteful number, since it uses less digits than its factorization.

145243434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458189.

The product of its digits is 23040, while the sum is 30.

The square root of 145243434 is about 12051.6983865346. The cubic root of 145243434 is about 525.6526233136.

Adding to 145243434 its reverse (434342541), we get a palindrome (579585975).

The spelling of 145243434 in words is "one hundred forty-five million, two hundred forty-three thousand, four hundred thirty-four".