61242237 has 20 divisors (see below), whose sum is σ = 104555616. Its totient is φ = 34995240.

The previous prime is 61242227. The next prime is 61242239. The reversal of 61242237 is 73224216.

61242237 is a `hidden beast` number, since 612 + 42 + 2 + 3 + 7 = 666.

It is not a de Polignac number, because 61242237 - 2¹⁹ = 60717949 is a prime.

It is a super-2 number, since 2×61242237² = 7501223185528338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 61242237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61242239) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 53439 + ... + 54572.

Almost surely, 2^61242237 is an apocalyptic number.

It is an amenable number.

61242237 is a deficient number, since it is larger than the sum of its proper divisors (43313379).

61242237 is a wasteful number, since it uses less digits than its factorization.

61242237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108030 (or 108021 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 61242237 is about 7825.7419456560. The cubic root of 61242237 is about 394.1701039997.

It can be divided in two parts, 612 and 42237, that added together give a square (42849 = 207²).

The spelling of 61242237 in words is "sixty-one million, two hundred forty-two thousand, two hundred thirty-seven".