145421535 has 32 divisors (see below), whose sum is σ = 279912960. Its totient is φ = 62978688.

The previous prime is 145421533. The next prime is 145421539. The reversal of 145421535 is 535124541.

It is not a de Polignac number, because 145421535 - 2¹ = 145421533 is a prime.

It is a super-2 number, since 2×145421535² = 42294845683512450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145421533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34452 + ... + 38441.

It is an arithmetic number, because the mean of its divisors is an integer number (8747280).

Almost surely, 2^145421535 is an apocalyptic number.

145421535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145421535 is a deficient number, since it is larger than the sum of its proper divisors (134491425).

145421535 is a wasteful number, since it uses less digits than its factorization.

145421535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72927.

The product of its digits is 12000, while the sum is 30.

The square root of 145421535 is about 12059.0851643066. The cubic root of 145421535 is about 525.8673915256.

The spelling of 145421535 in words is "one hundred forty-five million, four hundred twenty-one thousand, five hundred thirty-five".