8400517142 has 16 divisors (see below), whose sum is σ = 13028761872. Its totient is φ = 4059511680.

The previous prime is 8400517117. The next prime is 8400517163. The reversal of 8400517142 is 2417150048.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8400517099 and 8400517108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469943 + ... + 487490.

It is an arithmetic number, because the mean of its divisors is an integer number (814297617).

Almost surely, 2^8400517142 is an apocalyptic number.

8400517142 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

8400517142 is a deficient number, since it is larger than the sum of its proper divisors (4628244730).

8400517142 is a wasteful number, since it uses less digits than its factorization.

8400517142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957583.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 8400517142 is about 91654.3350966009. The cubic root of 8400517142 is about 2032.8344287455.

The spelling of 8400517142 in words is "eight billion, four hundred million, five hundred seventeen thousand, one hundred forty-two".