151523642 has 4 divisors (see below), whose sum is σ = 227285466. Its totient is φ = 75761820.

The previous prime is 151523641. The next prime is 151523677. The reversal of 151523642 is 246325151.

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

It can be written as a sum of positive squares in only one way, i.e., 138556441 + 12967201 = 11771^2 + 3601^2 .

It is not an unprimeable number, because it can be changed into a prime (151523641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37880909 + ... + 37880912.

Almost surely, 2^151523642 is an apocalyptic number.

151523642 is a deficient number, since it is larger than the sum of its proper divisors (75761824).

151523642 is an equidigital number, since it uses as much as digits as its factorization.

151523642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75761823.

The product of its digits is 7200, while the sum is 29.

The square root of 151523642 is about 12309.4939782267. The cubic root of 151523642 is about 533.1222399846.

Adding to 151523642 its reverse (246325151), we get a palindrome (397848793).

The spelling of 151523642 in words is "one hundred fifty-one million, five hundred twenty-three thousand, six hundred forty-two".