151231642 has 8 divisors (see below), whose sum is σ = 227988000. Its totient is φ = 75235644.

The previous prime is 151231603. The next prime is 151231649. The reversal of 151231642 is 246132151.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (151231649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189592 + ... + 190387.

It is an arithmetic number, because the mean of its divisors is an integer number (28498500).

Almost surely, 2^151231642 is an apocalyptic number.

151231642 is a deficient number, since it is larger than the sum of its proper divisors (76756358).

151231642 is a wasteful number, since it uses less digits than its factorization.

151231642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380180.

The product of its digits is 1440, while the sum is 25.

The square root of 151231642 is about 12297.6274947650. The cubic root of 151231642 is about 532.7795612292.

Adding to 151231642 its reverse (246132151), we get a palindrome (397363793).

The spelling of 151231642 in words is "one hundred fifty-one million, two hundred thirty-one thousand, six hundred forty-two".