202434157 has 2 divisors, whose sum is σ = 202434158. Its totient is φ = 202434156.

The previous prime is 202434139. The next prime is 202434191. The reversal of 202434157 is 751434202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201952521 + 481636 = 14211^2 + 694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202434157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202434107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101217078 + 101217079.

It is an arithmetic number, because the mean of its divisors is an integer number (101217079).

Almost surely, 2^202434157 is an apocalyptic number.

It is an amenable number.

202434157 is a deficient number, since it is larger than the sum of its proper divisors (1).

202434157 is an equidigital number, since it uses as much as digits as its factorization.

202434157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 202434157 is about 14227.9357954694. The cubic root of 202434157 is about 587.1664931944.

Adding to 202434157 its reverse (751434202), we get a palindrome (953868359).

The spelling of 202434157 in words is "two hundred two million, four hundred thirty-four thousand, one hundred fifty-seven".