151642342 has 4 divisors (see below), whose sum is σ = 227463516. Its totient is φ = 75821170.

The previous prime is 151642333. The next prime is 151642357. The reversal of 151642342 is 243246151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243246151 = 19 ⋅12802429.

It is a self number, because there is not a number n which added to its sum of digits gives 151642342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37910584 + ... + 37910587.

It is an arithmetic number, because the mean of its divisors is an integer number (56865879).

Almost surely, 2^151642342 is an apocalyptic number.

151642342 is a deficient number, since it is larger than the sum of its proper divisors (75821174).

151642342 is an equidigital number, since it uses as much as digits as its factorization.

151642342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75821173.

The product of its digits is 5760, while the sum is 28.

The square root of 151642342 is about 12314.3145160419. The cubic root of 151642342 is about 533.2614153894.

Adding to 151642342 its reverse (243246151), we get a palindrome (394888493).

The spelling of 151642342 in words is "one hundred fifty-one million, six hundred forty-two thousand, three hundred forty-two".