235542157 has 4 divisors (see below), whose sum is σ = 249397596. Its totient is φ = 221686720.

The previous prime is 235542143. The next prime is 235542163. The reversal of 235542157 is 751245532.

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

It can be written as a sum of positive squares in 2 ways, for example, as 155600676 + 79941481 = 12474^2 + 8941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235542157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235542127) 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, 6927694 + ... + 6927727.

It is an arithmetic number, because the mean of its divisors is an integer number (62349399).

Almost surely, 2^235542157 is an apocalyptic number.

It is an amenable number.

235542157 is a deficient number, since it is larger than the sum of its proper divisors (13855439).

235542157 is a wasteful number, since it uses less digits than its factorization.

235542157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13855438.

The product of its digits is 42000, while the sum is 34.

The square root of 235542157 is about 15347.3827410409. The cubic root of 235542157 is about 617.5747756486.

Adding to 235542157 its reverse (751245532), we get a palindrome (986787689).

The spelling of 235542157 in words is "two hundred thirty-five million, five hundred forty-two thousand, one hundred fifty-seven".