121440152542 has 8 divisors (see below), whose sum is σ = 186396513336. Its totient is φ = 59307981432.

The previous prime is 121440152479. The next prime is 121440152567. The reversal of 121440152542 is 245251044121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706047313 + ... + 706047484.

It is an arithmetic number, because the mean of its divisors is an integer number (23299564167).

Almost surely, 2^121440152542 is an apocalyptic number.

121440152542 is a deficient number, since it is larger than the sum of its proper divisors (64956360794).

121440152542 is a wasteful number, since it uses less digits than its factorization.

121440152542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412094842.

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 121440152542 its reverse (245251044121), we get a palindrome (366691196663).

The spelling of 121440152542 in words is "one hundred twenty-one billion, four hundred forty million, one hundred fifty-two thousand, five hundred forty-two".