145724542 has 8 divisors (see below), whose sum is σ = 220159800. Its totient is φ = 72337944.

The previous prime is 145724539. The next prime is 145724567. The reversal of 145724542 is 245427541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145724542² = 42471284282219528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145724498 and 145724507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261817 + ... + 262372.

It is an arithmetic number, because the mean of its divisors is an integer number (27519975).

Almost surely, 2^145724542 is an apocalyptic number.

145724542 is a deficient number, since it is larger than the sum of its proper divisors (74435258).

145724542 is a wasteful number, since it uses less digits than its factorization.

145724542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524330.

The product of its digits is 44800, while the sum is 34.

The square root of 145724542 is about 12071.6420589744. The cubic root of 145724542 is about 526.2323786375.

The spelling of 145724542 in words is "one hundred forty-five million, seven hundred twenty-four thousand, five hundred forty-two".