99745242 has 32 divisors (see below), whose sum is σ = 203412480. Its totient is φ = 32600880.

The previous prime is 99745241. The next prime is 99745253. The reversal of 99745242 is 24254799.

It is a super-2 number, since 2×99745242² = 19898226603277128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99745194 and 99745203.

It is not an unprimeable number, because it can be changed into a prime (99745241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76617 + ... + 77907.

It is an arithmetic number, because the mean of its divisors is an integer number (6356640).

Almost surely, 2^99745242 is an apocalyptic number.

99745242 is an abundant number, since it is smaller than the sum of its proper divisors (103667238).

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

99745242 is a wasteful number, since it uses less digits than its factorization.

99745242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538.

The product of its digits is 181440, while the sum is 42.

The square root of 99745242 is about 9987.2539769448. The cubic root of 99745242 is about 463.7643875388.

The spelling of 99745242 in words is "ninety-nine million, seven hundred forty-five thousand, two hundred forty-two".