61442210 has 16 divisors (see below), whose sum is σ = 111612600. Its totient is φ = 24350976.

The previous prime is 61442209. The next prime is 61442243. The reversal of 61442210 is 1224416.

It can be written as a sum of positive squares in 4 ways, for example, as 40309801 + 21132409 = 6349^2 + 4597^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27095 + ... + 29274.

Almost surely, 2^61442210 is an apocalyptic number.

61442210 is a deficient number, since it is larger than the sum of its proper divisors (50170390).

61442210 is a wasteful number, since it uses less digits than its factorization.

61442210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56485.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 61442210 is about 7838.5081488763. The cubic root of 61442210 is about 394.5986630242.

Adding to 61442210 its reverse (1224416), we get a palindrome (62666626).

It can be divided in two parts, 614 and 42210, that added together give a palindrome (42824).

The spelling of 61442210 in words is "sixty-one million, four hundred forty-two thousand, two hundred ten".