145671242 has 8 divisors (see below), whose sum is σ = 222629796. Its totient is φ = 71461312.

The previous prime is 145671241. The next prime is 145671269. The reversal of 145671242 is 242176541.

It can be written as a sum of positive squares in 2 ways, for example, as 127938721 + 17732521 = 11311^2 + 4211^2 .

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

It is a super-2 number, since 2×145671242² = 42440221491645128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145671199 and 145671208.

It is not an unprimeable number, because it can be changed into a prime (145671241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687023 + ... + 687234.

Almost surely, 2^145671242 is an apocalyptic number.

145671242 is a deficient number, since it is larger than the sum of its proper divisors (76958554).

145671242 is a wasteful number, since it uses less digits than its factorization.

145671242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374312.

The product of its digits is 13440, while the sum is 32.

The square root of 145671242 is about 12069.4342038059. The cubic root of 145671242 is about 526.1682128131.

The spelling of 145671242 in words is "one hundred forty-five million, six hundred seventy-one thousand, two hundred forty-two".