1501214420 has 24 divisors (see below), whose sum is σ = 3170780424. Its totient is φ = 597013376.

The previous prime is 1501214417. The next prime is 1501214423. The reversal of 1501214420 is 244121051.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1501214417) and next prime (1501214423).

It can be written as a sum of positive squares in 4 ways, for example, as 377758096 + 1123456324 = 19436^2 + 33518^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1501214392 and 1501214401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1501214423) 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, 213479 + ... + 220398.

It is an arithmetic number, because the mean of its divisors is an integer number (132115851).

Almost surely, 2^1501214420 is an apocalyptic number.

1501214420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1501214420 is an abundant number, since it is smaller than the sum of its proper divisors (1669566004).

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

1501214420 is a wasteful number, since it uses less digits than its factorization.

1501214420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434059 (or 434057 counting only the distinct ones).

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

The square root of 1501214420 is about 38745.5083848438. The cubic root of 1501214420 is about 1145.0230845253.

Adding to 1501214420 its reverse (244121051), we get a palindrome (1745335471).

The spelling of 1501214420 in words is "one billion, five hundred one million, two hundred fourteen thousand, four hundred twenty".