61321042 has 8 divisors (see below), whose sum is σ = 92243196. Its totient is φ = 30573312.

The previous prime is 61321021. The next prime is 61321049. The reversal of 61321042 is 24012316.

It can be written as a sum of positive squares in 2 ways, for example, as 60512841 + 808201 = 7779^2 + 899^2 .

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

It is not an unprimeable number, because it can be changed into a prime (61321049) 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, 42723 + ... + 44134.

Almost surely, 2^61321042 is an apocalyptic number.

61321042 is a deficient number, since it is larger than the sum of its proper divisors (30922154).

61321042 is a wasteful number, since it uses less digits than its factorization.

61321042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87212.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 61321042 is about 7830.7753128282. The cubic root of 61321042 is about 394.3391009891.

Adding to 61321042 its reverse (24012316), we get a palindrome (85333358).

The spelling of 61321042 in words is "sixty-one million, three hundred twenty-one thousand, forty-two".