121145503742 has 8 divisors (see below), whose sum is σ = 181822636632. Its totient is φ = 60537958200.

The previous prime is 121145503741. The next prime is 121145503747. The reversal of 121145503742 is 247305541121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×121145503742³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121145503741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17392484 + ... + 17399447.

It is an arithmetic number, because the mean of its divisors is an integer number (22727829579).

Almost surely, 2^121145503742 is an apocalyptic number.

121145503742 is a deficient number, since it is larger than the sum of its proper divisors (60677132890).

121145503742 is a wasteful number, since it uses less digits than its factorization.

121145503742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34793674.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 121145503742 in words is "one hundred twenty-one billion, one hundred forty-five million, five hundred three thousand, seven hundred forty-two".