342121501 has 4 divisors (see below), whose sum is σ = 342161212. Its totient is φ = 342081792.

The previous prime is 342121457. The next prime is 342121517. The reversal of 342121501 is 105121243.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 93586276 + 248535225 = 9674^2 + 15765^2 .

It is a cyclic number.

It is not a de Polignac number, because 342121501 - 2¹⁹ = 341597213 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 (342181501) 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 in 3 ways as a sum of consecutive naturals, for example, 900 + ... + 26173.

It is an arithmetic number, because the mean of its divisors is an integer number (85540303).

Almost surely, 2^342121501 is an apocalyptic number.

It is an amenable number.

342121501 is a deficient number, since it is larger than the sum of its proper divisors (39711).

342121501 is a wasteful number, since it uses less digits than its factorization.

342121501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39710.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 342121501 is about 18496.5267280103. The cubic root of 342121501 is about 699.4018706944.

Adding to 342121501 its reverse (105121243), we get a palindrome (447242744).

The spelling of 342121501 in words is "three hundred forty-two million, one hundred twenty-one thousand, five hundred one".