242155501 has 12 divisors (see below), whose sum is σ = 281948448. Its totient is φ = 207372312.

The previous prime is 242155499. The next prime is 242155519. The reversal of 242155501 is 105551242.

It is not a de Polignac number, because 242155501 - 2¹ = 242155499 is a prime.

It is a super-2 number, since 2×242155501² = 117278573329122002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242155541) 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, 90160 + ... + 92806.

It is an arithmetic number, because the mean of its divisors is an integer number (23495704).

Almost surely, 2^242155501 is an apocalyptic number.

It is an amenable number.

242155501 is a deficient number, since it is larger than the sum of its proper divisors (39792947).

242155501 is a wasteful number, since it uses less digits than its factorization.

242155501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528 (or 4521 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 242155501 is about 15561.3463749124. The cubic root of 242155501 is about 623.3014153985.

The spelling of 242155501 in words is "two hundred forty-two million, one hundred fifty-five thousand, five hundred one".