61242047 has 2 divisors, whose sum is σ = 61242048. Its totient is φ = 61242046.

The previous prime is 61242001. The next prime is 61242053. The reversal of 61242047 is 74024216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61242047 - 2¹⁸ = 60979903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61242647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30621023 + 30621024.

It is an arithmetic number, because the mean of its divisors is an integer number (30621024).

Almost surely, 2^61242047 is an apocalyptic number.

61242047 is a deficient number, since it is larger than the sum of its proper divisors (1).

61242047 is an equidigital number, since it uses as much as digits as its factorization.

61242047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 61242047 is about 7825.7298062225. The cubic root of 61242047 is about 394.1696963703.

The spelling of 61242047 in words is "sixty-one million, two hundred forty-two thousand, forty-seven".