61142213 has 8 divisors (see below), whose sum is σ = 66799296. Its totient is φ = 55501600.

The previous prime is 61142203. The next prime is 61142219. The reversal of 61142213 is 31224116.

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

It is not a de Polignac number, because 61142213 - 2⁸ = 61141957 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 (61142219) 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, 4433 + ... + 11913.

It is an arithmetic number, because the mean of its divisors is an integer number (8349912).

Almost surely, 2^61142213 is an apocalyptic number.

It is an amenable number.

61142213 is a deficient number, since it is larger than the sum of its proper divisors (5657083).

61142213 is a wasteful number, since it uses less digits than its factorization.

61142213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8235.

The product of its digits is 288, while the sum is 20.

The square root of 61142213 is about 7819.3486301610. The cubic root of 61142213 is about 393.9553940415.

Adding to 61142213 its reverse (31224116), we get a palindrome (92366329).

It can be divided in two parts, 611 and 42213, that added together give a palindrome (42824).

The spelling of 61142213 in words is "sixty-one million, one hundred forty-two thousand, two hundred thirteen".