10102420145 has 8 divisors (see below), whose sum is σ = 12321640680. Its totient is φ = 7949445120.

The previous prime is 10102420121. The next prime is 10102420177. The reversal of 10102420145 is 54102420101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 100020001 + 10002400144 = 10001^2 + 100012^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10102420145 - 2⁸ = 10102419889 is a prime.

It is a super-2 number, since 2×10102420145² (a number of 21 digits) contains 22 as substring.

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, 16561040 + ... + 16561649.

It is an arithmetic number, because the mean of its divisors is an integer number (1540205085).

Almost surely, 2^10102420145 is an apocalyptic number.

It is an amenable number.

10102420145 is a deficient number, since it is larger than the sum of its proper divisors (2219220535).

10102420145 is an equidigital number, since it uses as much as digits as its factorization.

10102420145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33122755.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 10102420145 its reverse (54102420101), we get a palindrome (64204840246).

The spelling of 10102420145 in words is "ten billion, one hundred two million, four hundred twenty thousand, one hundred forty-five".