61242213 has 8 divisors (see below), whose sum is σ = 81692800. Its totient is φ = 40809888.

The previous prime is 61242193. The next prime is 61242227. The reversal of 61242213 is 31224216.

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

It is not a de Polignac number, because 61242213 - 2¹⁰ = 61241189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61242213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61249213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9153 + ... + 14361.

It is an arithmetic number, because the mean of its divisors is an integer number (10211600).

Almost surely, 2^61242213 is an apocalyptic number.

It is an amenable number.

61242213 is a deficient number, since it is larger than the sum of its proper divisors (20450587).

61242213 is a wasteful number, since it uses less digits than its factorization.

61242213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9131.

The product of its digits is 576, while the sum is 21.

The square root of 61242213 is about 7825.7404122549. The cubic root of 61242213 is about 394.1700525097.

Adding to 61242213 its reverse (31224216), we get a palindrome (92466429).

The spelling of 61242213 in words is "sixty-one million, two hundred forty-two thousand, two hundred thirteen".