102631420 has 12 divisors (see below), whose sum is σ = 215526024. Its totient is φ = 41052560.

The previous prime is 102631387. The next prime is 102631427. The reversal of 102631420 is 24136201.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102631427) 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, 2565766 + ... + 2565805.

It is an arithmetic number, because the mean of its divisors is an integer number (17960502).

Almost surely, 2^102631420 is an apocalyptic number.

102631420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102631420 is an abundant number, since it is smaller than the sum of its proper divisors (112894604).

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

102631420 is a wasteful number, since it uses less digits than its factorization.

102631420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5131580 (or 5131578 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 102631420 is about 10130.7166577691. The cubic root of 102631420 is about 468.1950084631.

Adding to 102631420 its reverse (24136201), we get a palindrome (126767621).

The spelling of 102631420 in words is "one hundred two million, six hundred thirty-one thousand, four hundred twenty".