978307042 has 16 divisors (see below), whose sum is σ = 1484868672. Its totient is φ = 483385360.

The previous prime is 978307039. The next prime is 978307049. The reversal of 978307042 is 240703879.

It is a junction number, because it is equal to n+sod(n) for n = 978306986 and 978307004.

It is not an unprimeable number, because it can be changed into a prime (978307049) 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, 49317 + ... + 66247.

It is an arithmetic number, because the mean of its divisors is an integer number (92804292).

Almost surely, 2^978307042 is an apocalyptic number.

978307042 is a deficient number, since it is larger than the sum of its proper divisors (506561630).

978307042 is a wasteful number, since it uses less digits than its factorization.

978307042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17273.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 978307042 is about 31277.9002172460. The cubic root of 978307042 is about 992.7160874347.

The spelling of 978307042 in words is "nine hundred seventy-eight million, three hundred seven thousand, forty-two".