145434090 has 32 divisors (see below), whose sum is σ = 349413120. Its totient is φ = 38741184.

The previous prime is 145434059. The next prime is 145434097. The reversal of 145434090 is 90434541.

145434090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (145434097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35151 + ... + 39069.

It is an arithmetic number, because the mean of its divisors is an integer number (10919160).

Almost surely, 2^145434090 is an apocalyptic number.

145434090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145434090 is an abundant number, since it is smaller than the sum of its proper divisors (203979030).

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

145434090 is a wasteful number, since it uses less digits than its factorization.

145434090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5166.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 145434090 is about 12059.6057149477. The cubic root of 145434090 is about 525.8825247155.

The spelling of 145434090 in words is "one hundred forty-five million, four hundred thirty-four thousand, ninety".