151442 has 4 divisors (see below), whose sum is σ = 227166. Its totient is φ = 75720.

The previous prime is 151433. The next prime is 151451. The reversal of 151442 is 244151.

151442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244151 = 29 ⋅8419.

It is an interprime number because it is at equal distance from previous prime (151433) and next prime (151451).

It can be written as a sum of positive squares in only one way, i.e., 151321 + 121 = 389^2 + 11^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 151442.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 151442.

It is an unprimeable number.

151442 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37859 + ... + 37862.

2¹⁵¹⁴⁴² is an apocalyptic number.

151442 is a deficient number, since it is larger than the sum of its proper divisors (75724).

151442 is an equidigital number, since it uses as much as digits as its factorization.

151442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75723.

The product of its digits is 160, while the sum is 17.

The square root of 151442 is about 389.1554959139. The cubic root of 151442 is about 53.3026472783.

Adding to 151442 its reverse (244151), we get a palindrome (395593).

The spelling of 151442 in words is "one hundred fifty-one thousand, four hundred forty-two".