145161442 has 8 divisors (see below), whose sum is σ = 219898332. Its totient is φ = 71862000.

The previous prime is 145161433. The next prime is 145161451. The reversal of 145161442 is 244161541.

It is an interprime number because it is at equal distance from previous prime (145161433) and next prime (145161451).

It can be written as a sum of positive squares in 2 ways, for example, as 131537961 + 13623481 = 11469^2 + 3691^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 145161442.

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, 359109 + ... + 359512.

Almost surely, 2^145161442 is an apocalyptic number.

145161442 is a deficient number, since it is larger than the sum of its proper divisors (74736890).

145161442 is a wasteful number, since it uses less digits than its factorization.

145161442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718724.

The product of its digits is 3840, while the sum is 28.

The square root of 145161442 is about 12048.2962280980. The cubic root of 145161442 is about 525.5536918822.

Subtracting 145161442 from its reverse (244161541), we obtain a palindrome (99000099).

The spelling of 145161442 in words is "one hundred forty-five million, one hundred sixty-one thousand, four hundred forty-two".