151515142 has 4 divisors (see below), whose sum is σ = 227272716. Its totient is φ = 75757570.

The previous prime is 151515097. The next prime is 151515149. The reversal of 151515142 is 241515151.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151515149) 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, 37878784 + ... + 37878787.

It is an arithmetic number, because the mean of its divisors is an integer number (56818179).

Almost surely, 2^151515142 is an apocalyptic number.

151515142 is a deficient number, since it is larger than the sum of its proper divisors (75757574).

151515142 is an equidigital number, since it uses as much as digits as its factorization.

151515142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75757573.

The product of its digits is 1000, while the sum is 25.

The square root of 151515142 is about 12309.1487114260. The cubic root of 151515142 is about 533.1122709709.

Subtracting 151515142 from its reverse (241515151), we obtain a palindrome (90000009).

The spelling of 151515142 in words is "one hundred fifty-one million, five hundred fifteen thousand, one hundred forty-two".