145270434 has 16 divisors (see below), whose sum is σ = 291593088. Its totient is φ = 48248112.

The previous prime is 145270397. The next prime is 145270439. The reversal of 145270434 is 434072541.

It is a super-2 number, since 2×145270434² = 42206997989096712, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145270439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42042 + ... + 45365.

It is an arithmetic number, because the mean of its divisors is an integer number (18224568).

Almost surely, 2^145270434 is an apocalyptic number.

145270434 is an abundant number, since it is smaller than the sum of its proper divisors (146322654).

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

145270434 is a wasteful number, since it uses less digits than its factorization.

145270434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87689.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 145270434 is about 12052.8185085481. The cubic root of 145270434 is about 525.6851933263.

The spelling of 145270434 in words is "one hundred forty-five million, two hundred seventy thousand, four hundred thirty-four".