427155642 has 24 divisors (see below), whose sum is σ = 926108820. Its totient is φ = 142292160.

The previous prime is 427155637. The next prime is 427155643. The reversal of 427155642 is 246551724.

It is a happy number.

427155642 is a `hidden beast` number, since 4 + 2 + 7 + 1 + 5 + 5 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 352350441 + 74805201 = 18771^2 + 8649^2 .

It is a junction number, because it is equal to n+sod(n) for n = 427155597 and 427155606.

It is not an unprimeable number, because it can be changed into a prime (427155643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24084 + ... + 37872.

Almost surely, 2^427155642 is an apocalyptic number.

427155642 is an abundant number, since it is smaller than the sum of its proper divisors (498953178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427155642 is a wasteful number, since it uses less digits than its factorization.

427155642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15518 (or 15515 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 427155642 is about 20667.7439988016. The cubic root of 427155642 is about 753.1163029407.

The spelling of 427155642 in words is "four hundred twenty-seven million, one hundred fifty-five thousand, six hundred forty-two".