145701238 has 4 divisors (see below), whose sum is σ = 218551860. Its totient is φ = 72850618.

The previous prime is 145701229. The next prime is 145701239. The reversal of 145701238 is 832107541.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145701239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36425308 + ... + 36425311.

It is an arithmetic number, because the mean of its divisors is an integer number (54637965).

Almost surely, 2^145701238 is an apocalyptic number.

145701238 is a deficient number, since it is larger than the sum of its proper divisors (72850622).

145701238 is an equidigital number, since it uses as much as digits as its factorization.

145701238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72850621.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 145701238 is about 12070.6767830143. The cubic root of 145701238 is about 526.2043257716.

Adding to 145701238 its reverse (832107541), we get a palindrome (977808779).

The spelling of 145701238 in words is "one hundred forty-five million, seven hundred one thousand, two hundred thirty-eight".