242549400 has 48 divisors (see below), whose sum is σ = 751905000. Its totient is φ = 64679680.

The previous prime is 242549381. The next prime is 242549401. The reversal of 242549400 is 4945242.

It is a super-2 number, since 2×242549400² = 117660422880720000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242549401) 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, 201525 + ... + 202724.

Almost surely, 2^242549400 is an apocalyptic number.

242549400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242549400 is an abundant number, since it is smaller than the sum of its proper divisors (509355600).

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

242549400 is a wasteful number, since it uses less digits than its factorization.

242549400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404268 (or 404259 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 242549400 is about 15573.9975600358. The cubic root of 242549400 is about 623.6391939480.

The spelling of 242549400 in words is "two hundred forty-two million, five hundred forty-nine thousand, four hundred".