216125642 has 8 divisors (see below), whose sum is σ = 327831300. Its totient is φ = 106848544.

The previous prime is 216125639. The next prime is 216125653. The reversal of 216125642 is 246521612.

It can be written as a sum of positive squares in 2 ways, for example, as 216119401 + 6241 = 14701^2 + 79^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606917 + ... + 607272.

Almost surely, 2^216125642 is an apocalyptic number.

216125642 is a deficient number, since it is larger than the sum of its proper divisors (111705658).

216125642 is a wasteful number, since it uses less digits than its factorization.

216125642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214280.

The product of its digits is 5760, while the sum is 29.

The square root of 216125642 is about 14701.2122629394. The cubic root of 216125642 is about 600.1163126360.

The spelling of 216125642 in words is "two hundred sixteen million, one hundred twenty-five thousand, six hundred forty-two".