145143542 has 4 divisors (see below), whose sum is σ = 217715316. Its totient is φ = 72571770.

The previous prime is 145143469. The next prime is 145143571. The reversal of 145143542 is 245341541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245341541 = 2267 ⋅108223.

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, 36285884 + ... + 36285887.

It is an arithmetic number, because the mean of its divisors is an integer number (54428829).

Almost surely, 2^145143542 is an apocalyptic number.

145143542 is a deficient number, since it is larger than the sum of its proper divisors (72571774).

145143542 is an equidigital number, since it uses as much as digits as its factorization.

145143542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72571773.

The product of its digits is 9600, while the sum is 29.

The square root of 145143542 is about 12047.5533615751. The cubic root of 145143542 is about 525.5320888136.

The spelling of 145143542 in words is "one hundred forty-five million, one hundred forty-three thousand, five hundred forty-two".