145424407 has 2 divisors, whose sum is σ = 145424408. Its totient is φ = 145424406.

The previous prime is 145424399. The next prime is 145424429. The reversal of 145424407 is 704424541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145424407 - 2³ = 145424399 is a prime.

It is a super-2 number, since 2×145424407² = 42296516302603298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145424497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72712203 + 72712204.

It is an arithmetic number, because the mean of its divisors is an integer number (72712204).

Almost surely, 2^145424407 is an apocalyptic number.

145424407 is a deficient number, since it is larger than the sum of its proper divisors (1).

145424407 is an equidigital number, since it uses as much as digits as its factorization.

145424407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 145424407 is about 12059.2042440619. The cubic root of 145424407 is about 525.8708533723.

Adding to 145424407 its reverse (704424541), we get a palindrome (849848948).

The spelling of 145424407 in words is "one hundred forty-five million, four hundred twenty-four thousand, four hundred seven".