144164542 has 4 divisors (see below), whose sum is σ = 216246816. Its totient is φ = 72082270.

The previous prime is 144164507. The next prime is 144164549. The reversal of 144164542 is 245461441.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144164549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36041134 + ... + 36041137.

It is an arithmetic number, because the mean of its divisors is an integer number (54061704).

Almost surely, 2^144164542 is an apocalyptic number.

144164542 is a deficient number, since it is larger than the sum of its proper divisors (72082274).

144164542 is an equidigital number, since it uses as much as digits as its factorization.

144164542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72082273.

The product of its digits is 15360, while the sum is 31.

The square root of 144164542 is about 12006.8539593017. The cubic root of 144164542 is about 524.3478426793.

The spelling of 144164542 in words is "one hundred forty-four million, one hundred sixty-four thousand, five hundred forty-two".