61142906 has 16 divisors (see below), whose sum is σ = 100333728. Its totient is φ = 27714000.

The previous prime is 61142869. The next prime is 61142929. The reversal of 61142906 is 60924116.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4481 + ... + 11931.

It is an arithmetic number, because the mean of its divisors is an integer number (6270858).

Almost surely, 2^61142906 is an apocalyptic number.

61142906 is a deficient number, since it is larger than the sum of its proper divisors (39190822).

61142906 is a wasteful number, since it uses less digits than its factorization.

61142906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7837.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 61142906 is about 7819.3929431894. The cubic root of 61142906 is about 393.9568824298.

The spelling of 61142906 in words is "sixty-one million, one hundred forty-two thousand, nine hundred six".