616142642 has 16 divisors (see below), whose sum is σ = 965948760. Its totient is φ = 294379008.

The previous prime is 616142633. The next prime is 616142647. The reversal of 616142642 is 246241616.

616142642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 369369961 + 246772681 = 19219^2 + 15709^2 .

It is a junction number, because it is equal to n+sod(n) for n = 616142599 and 616142608.

It is not an unprimeable number, because it can be changed into a prime (616142647) 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, 49133 + ... + 60384.

Almost surely, 2^616142642 is an apocalyptic number.

616142642 is a deficient number, since it is larger than the sum of its proper divisors (349806118).

616142642 is a wasteful number, since it uses less digits than its factorization.

616142642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109645.

The product of its digits is 13824, while the sum is 32.

The square root of 616142642 is about 24822.2207306276. The cubic root of 616142642 is about 850.9298438025.

The spelling of 616142642 in words is "six hundred sixteen million, one hundred forty-two thousand, six hundred forty-two".