61142011 has 4 divisors (see below), whose sum is σ = 69876592. Its totient is φ = 52407432.

The previous prime is 61141999. The next prime is 61142017. The reversal of 61142011 is 11024116.

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

It is not a de Polignac number, because 61142011 - 2¹⁹ = 60617723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61142017) 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, 4367280 + ... + 4367293.

It is an arithmetic number, because the mean of its divisors is an integer number (17469148).

Almost surely, 2^61142011 is an apocalyptic number.

61142011 is a deficient number, since it is larger than the sum of its proper divisors (8734581).

61142011 is an equidigital number, since it uses as much as digits as its factorization.

61142011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8734580.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 61142011 is about 7819.3357134734. The cubic root of 61142011 is about 393.9549601946.

Adding to 61142011 its reverse (11024116), we get a palindrome (72166127).

The spelling of 61142011 in words is "sixty-one million, one hundred forty-two thousand, eleven".