151213142 has 4 divisors (see below), whose sum is σ = 226819716. Its totient is φ = 75606570.

The previous prime is 151213141. The next prime is 151213159. The reversal of 151213142 is 241312151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241312151 = 277 ⋅871163.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151213141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37803284 + ... + 37803287.

It is an arithmetic number, because the mean of its divisors is an integer number (56704929).

Almost surely, 2^151213142 is an apocalyptic number.

151213142 is a deficient number, since it is larger than the sum of its proper divisors (75606574).

151213142 is an equidigital number, since it uses as much as digits as its factorization.

151213142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75606573.

The product of its digits is 240, while the sum is 20.

The square root of 151213142 is about 12296.8752941550. The cubic root of 151213142 is about 532.7578355645.

Adding to 151213142 its reverse (241312151), we get a palindrome (392525293).

Subtracting 151213142 from its reverse (241312151), we obtain a palindrome (90099009).

The spelling of 151213142 in words is "one hundred fifty-one million, two hundred thirteen thousand, one hundred forty-two".