242147619 has 48 divisors (see below), whose sum is σ = 416212992. Its totient is φ = 132784704.

The previous prime is 242147617. The next prime is 242147621. The reversal of 242147619 is 916741242.

It is a happy number.

242147619 is a `hidden beast` number, since 24 + 2 + 14 + 7 + 619 = 666.

It is an interprime number because it is at equal distance from previous prime (242147617) and next prime (242147621).

It is not a de Polignac number, because 242147619 - 2¹ = 242147617 is a prime.

It is a super-2 number, since 2×242147619² = 117270938774738322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242147617) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156162 + ... + 157704.

It is an arithmetic number, because the mean of its divisors is an integer number (8671104).

Almost surely, 2^242147619 is an apocalyptic number.

242147619 is a deficient number, since it is larger than the sum of its proper divisors (174065373).

242147619 is a wasteful number, since it uses less digits than its factorization.

242147619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656 (or 1653 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 242147619 is about 15561.0931171303. The cubic root of 242147619 is about 623.2946526434.

The spelling of 242147619 in words is "two hundred forty-two million, one hundred forty-seven thousand, six hundred nineteen".