145423245 has 48 divisors (see below), whose sum is σ = 269277120. Its totient is φ = 66781440.

The previous prime is 145423199. The next prime is 145423249. The reversal of 145423245 is 542324541.

It is not a de Polignac number, because 145423245 - 2¹¹ = 145421197 is a prime.

It is a super-2 number, since 2×145423245² = 42295840372660050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145423249) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32377 + ... + 36593.

It is an arithmetic number, because the mean of its divisors is an integer number (5609940).

Almost surely, 2^145423245 is an apocalyptic number.

145423245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145423245 is a deficient number, since it is larger than the sum of its proper divisors (123853875).

145423245 is a wasteful number, since it uses less digits than its factorization.

145423245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266 (or 4255 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 145423245 is about 12059.1560649989. The cubic root of 145423245 is about 525.8694527281.

Adding to 145423245 its reverse (542324541), we get a palindrome (687747786).

The spelling of 145423245 in words is "one hundred forty-five million, four hundred twenty-three thousand, two hundred forty-five".