102445331420 has 24 divisors (see below), whose sum is σ = 220382397648. Its totient is φ = 39978665600.

The previous prime is 102445331419. The next prime is 102445331423. The reversal of 102445331420 is 24133544201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102445331423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62465846 + ... + 62467485.

It is an arithmetic number, because the mean of its divisors is an integer number (9182599902).

Almost surely, 2^102445331420 is an apocalyptic number.

102445331420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102445331420 is an abundant number, since it is smaller than the sum of its proper divisors (117937066228).

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

102445331420 is a wasteful number, since it uses less digits than its factorization.

102445331420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124933381 (or 124933379 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 102445331420 its reverse (24133544201), we get a palindrome (126578875621).

The spelling of 102445331420 in words is "one hundred two billion, four hundred forty-five million, three hundred thirty-one thousand, four hundred twenty".