102420976450 has 24 divisors (see below), whose sum is σ = 205157095668. Its totient is φ = 37816975680.

The previous prime is 102420976447. The next prime is 102420976453. The reversal of 102420976450 is 54679024201.

It is an interprime number because it is at equal distance from previous prime (102420976447) and next prime (102420976453).

It can be written as a sum of positive squares in 6 ways, for example, as 11566357209 + 90854619241 = 107547^2 + 301421^2 .

It is a super-3 number, since 3×102420976450³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (102420976453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78784717 + ... + 78786016.

Almost surely, 2^102420976450 is an apocalyptic number.

102420976450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102420976450 is an abundant number, since it is smaller than the sum of its proper divisors (102736119218).

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

102420976450 is a wasteful number, since it uses less digits than its factorization.

102420976450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157570758 (or 157570753 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 102420976450 in words is "one hundred two billion, four hundred twenty million, nine hundred seventy-six thousand, four hundred fifty".