121842534 has 16 divisors (see below), whose sum is σ = 265838400. Its totient is φ = 36921960.

The previous prime is 121842527. The next prime is 121842541. The reversal of 121842534 is 435248121.

It is an interprime number because it is at equal distance from previous prime (121842527) and next prime (121842541).

It is a congruent number.

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, 922984 + ... + 923115.

It is an arithmetic number, because the mean of its divisors is an integer number (16614900).

Almost surely, 2^121842534 is an apocalyptic number.

121842534 is an abundant number, since it is smaller than the sum of its proper divisors (143995866).

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

121842534 is a wasteful number, since it uses less digits than its factorization.

121842534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846115.

The product of its digits is 7680, while the sum is 30.

The square root of 121842534 is about 11038.2305647237. The cubic root of 121842534 is about 495.7540919213.

The spelling of 121842534 in words is "one hundred twenty-one million, eight hundred forty-two thousand, five hundred thirty-four".