242499999 has 16 divisors (see below), whose sum is σ = 371571200. Its totient is φ = 137803680.

The previous prime is 242499973. The next prime is 242500009. The reversal of 242499999 is 999994242.

It is not a de Polignac number, because 242499999 - 2⁵ = 242499967 is a prime.

242499999 is a modest number, since divided by 99999 gives 2424 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242499799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28099 + ... + 35700.

It is an arithmetic number, because the mean of its divisors is an integer number (23223200).

Almost surely, 2^242499999 is an apocalyptic number.

242499999 is a deficient number, since it is larger than the sum of its proper divisors (129071201).

242499999 is a wasteful number, since it uses less digits than its factorization.

242499999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63990.

The product of its digits is 3779136, while the sum is 57.

The square root of 242499999 is about 15572.4114702894. The cubic root of 242499999 is about 623.5968513824.

The spelling of 242499999 in words is "two hundred forty-two million, four hundred ninety-nine thousand, nine hundred ninety-nine".