121342543435 has 8 divisors (see below), whose sum is σ = 145620248256. Its totient is φ = 97067904000.

The previous prime is 121342543393. The next prime is 121342543481. The reversal of 121342543435 is 534345243121.

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

It is not a de Polignac number, because 121342543435 - 2²⁵ = 121308989003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121342543394 and 121342543403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678339 + ... + 838348.

It is an arithmetic number, because the mean of its divisors is an integer number (18202531032).

Almost surely, 2^121342543435 is an apocalyptic number.

121342543435 is a deficient number, since it is larger than the sum of its proper divisors (24277704821).

121342543435 is a wasteful number, since it uses less digits than its factorization.

121342543435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532693.

The product of its digits is 172800, while the sum is 37.

Adding to 121342543435 its reverse (534345243121), we get a palindrome (655687786556).

The spelling of 121342543435 in words is "one hundred twenty-one billion, three hundred forty-two million, five hundred forty-three thousand, four hundred thirty-five".