145732046 has 4 divisors (see below), whose sum is σ = 218598072. Its totient is φ = 72866022.

The previous prime is 145732039. The next prime is 145732051. The reversal of 145732046 is 640237541.

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

It is a super-2 number, since 2×145732046² = 42475658462692232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36433010 + ... + 36433013.

It is an arithmetic number, because the mean of its divisors is an integer number (54649518).

Almost surely, 2^145732046 is an apocalyptic number.

145732046 is a deficient number, since it is larger than the sum of its proper divisors (72866026).

145732046 is an equidigital number, since it uses as much as digits as its factorization.

145732046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72866025.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 145732046 is about 12071.9528660445. The cubic root of 145732046 is about 526.2414111586.

Adding to 145732046 its reverse (640237541), we get a palindrome (785969587).

The spelling of 145732046 in words is "one hundred forty-five million, seven hundred thirty-two thousand, forty-six".