102121437 has 16 divisors (see below), whose sum is σ = 148726080. Its totient is φ = 61814400.

The previous prime is 102121421. The next prime is 102121463. The reversal of 102121437 is 734121201.

It is not a de Polignac number, because 102121437 - 2⁴ = 102121421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35887 + ... + 38627.

It is an arithmetic number, because the mean of its divisors is an integer number (9295380).

Almost surely, 2^102121437 is an apocalyptic number.

It is an amenable number.

102121437 is a deficient number, since it is larger than the sum of its proper divisors (46604643).

102121437 is a wasteful number, since it uses less digits than its factorization.

102121437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 102121437 is about 10105.5151773673. The cubic root of 102121437 is about 467.4182220384.

Adding to 102121437 its reverse (734121201), we get a palindrome (836242638).

The spelling of 102121437 in words is "one hundred two million, one hundred twenty-one thousand, four hundred thirty-seven".