145420433 has 4 divisors (see below), whose sum is σ = 153074160. Its totient is φ = 137766708.

The previous prime is 145420423. The next prime is 145420439. The reversal of 145420433 is 334024541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145420433 - 2⁶ = 145420369 is a prime.

It is a super-2 number, since 2×145420433² = 42294204667814978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145420439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3826835 + ... + 3826872.

It is an arithmetic number, because the mean of its divisors is an integer number (38268540).

Almost surely, 2^145420433 is an apocalyptic number.

It is an amenable number.

145420433 is a deficient number, since it is larger than the sum of its proper divisors (7653727).

145420433 is an equidigital number, since it uses as much as digits as its factorization.

145420433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7653726.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 145420433 is about 12059.0394725285. The cubic root of 145420433 is about 525.8660631865.

Adding to 145420433 its reverse (334024541), we get a palindrome (479444974).

The spelling of 145420433 in words is "one hundred forty-five million, four hundred twenty thousand, four hundred thirty-three".