15420014 has 4 divisors (see below), whose sum is σ = 23130024. Its totient is φ = 7710006.

The previous prime is 15420011. The next prime is 15420017. The reversal of 15420014 is 41002451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41002451 = 7 ⋅5857493.

It is an interprime number because it is at equal distance from previous prime (15420011) and next prime (15420017).

It is a junction number, because it is equal to n+sod(n) for n = 15419974 and 15420001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15420011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3855002 + ... + 3855005.

It is an arithmetic number, because the mean of its divisors is an integer number (5782506).

Almost surely, 2^15420014 is an apocalyptic number.

15420014 is a deficient number, since it is larger than the sum of its proper divisors (7710010).

15420014 is an equidigital number, since it uses as much as digits as its factorization.

15420014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7710009.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 15420014 is about 3926.8325658220. The cubic root of 15420014 is about 248.9019253228.

Adding to 15420014 its reverse (41002451), we get a palindrome (56422465).

The spelling of 15420014 in words is "fifteen million, four hundred twenty thousand, fourteen".