61425442 has 16 divisors (see below), whose sum is σ = 104448960. Its totient is φ = 26857872.

The previous prime is 61425401. The next prime is 61425443. The reversal of 61425442 is 24452416.

It is a self number, because there is not a number n which added to its sum of digits gives 61425442.

It is not an unprimeable number, because it can be changed into a prime (61425443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61678 + ... + 62665.

It is an arithmetic number, because the mean of its divisors is an integer number (6528060).

Almost surely, 2^61425442 is an apocalyptic number.

61425442 is a deficient number, since it is larger than the sum of its proper divisors (43023518).

61425442 is a wasteful number, since it uses less digits than its factorization.

61425442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124377.

The product of its digits is 7680, while the sum is 28.

The square root of 61425442 is about 7837.4384846071. The cubic root of 61425442 is about 394.5627635322.

Adding to 61425442 its reverse (24452416), we get a palindrome (85877858).

It can be divided in two parts, 61 and 425442, that added together give a triangular number (425503 = T₉₂₂).

The spelling of 61425442 in words is "sixty-one million, four hundred twenty-five thousand, four hundred forty-two".