102142551501 has 8 divisors (see below), whose sum is σ = 151322298560. Its totient is φ = 68095034316.

The previous prime is 102142551499. The next prime is 102142551503. The reversal of 102142551501 is 105155241201.

It is a happy number.

102142551501 is a `hidden beast` number, since 1 + 0 + 2 + 142 + 5 + 515 + 0 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (102142551499) and next prime (102142551503).

It is not a de Polignac number, because 102142551501 - 2¹ = 102142551499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3783057463 = 102142551501 / (1 + 0 + 2 + 1 + 4 + 2 + 5 + 5 + 1 + 5 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102142551503) 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, 1891528705 + ... + 1891528758.

It is an arithmetic number, because the mean of its divisors is an integer number (18915287320).

Almost surely, 2^102142551501 is an apocalyptic number.

It is an amenable number.

102142551501 is a deficient number, since it is larger than the sum of its proper divisors (49179747059).

102142551501 is an equidigital number, since it uses as much as digits as its factorization.

102142551501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783057472 (or 3783057466 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 102142551501 its reverse (105155241201), we get a palindrome (207297792702).

The spelling of 102142551501 in words is "one hundred two billion, one hundred forty-two million, five hundred fifty-one thousand, five hundred one".