61851942 has 48 divisors (see below), whose sum is σ = 137592000. Its totient is φ = 20074032.

The previous prime is 61851929. The next prime is 61851943. The reversal of 61851942 is 24915816.

It is a junction number, because it is equal to n+sod(n) for n = 61851897 and 61851906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61851943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147409 + ... + 147827.

It is an arithmetic number, because the mean of its divisors is an integer number (2866500).

Almost surely, 2^61851942 is an apocalyptic number.

61851942 is an abundant number, since it is smaller than the sum of its proper divisors (75740058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61851942 is a wasteful number, since it uses less digits than its factorization.

61851942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 622 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 61851942 is about 7864.6005620120. The cubic root of 61851942 is about 395.4738574217.

The spelling of 61851942 in words is "sixty-one million, eight hundred fifty-one thousand, nine hundred forty-two".