145164742 has 4 divisors (see below), whose sum is σ = 217747116. Its totient is φ = 72582370.

The previous prime is 145164737. The next prime is 145164743. The reversal of 145164742 is 247461541.

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

It is a junction number, because it is equal to n+sod(n) for n = 145164698 and 145164707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145164743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36291184 + ... + 36291187.

It is an arithmetic number, because the mean of its divisors is an integer number (54436779).

Almost surely, 2^145164742 is an apocalyptic number.

145164742 is a deficient number, since it is larger than the sum of its proper divisors (72582374).

145164742 is an equidigital number, since it uses as much as digits as its factorization.

145164742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72582373.

The product of its digits is 26880, while the sum is 34.

The square root of 145164742 is about 12048.4331761437. The cubic root of 145164742 is about 525.5576743770.

The spelling of 145164742 in words is "one hundred forty-five million, one hundred sixty-four thousand, seven hundred forty-two".