401421552 has 40 divisors (see below), whose sum is σ = 1185150336. Its totient is φ = 114691776.

The previous prime is 401421551. The next prime is 401421557. The reversal of 401421552 is 255124104.

It is a super-2 number, since 2×401421552² = 322278524820177408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401421551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597018 + ... + 597689.

Almost surely, 2^401421552 is an apocalyptic number.

401421552 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

401421552 is an abundant number, since it is smaller than the sum of its proper divisors (783728784).

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

401421552 is a wasteful number, since it uses less digits than its factorization.

401421552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194725 (or 1194719 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 401421552 is about 20035.5072808252. The cubic root of 401421552 is about 737.6781081656.

Adding to 401421552 its reverse (255124104), we get a palindrome (656545656).

The spelling of 401421552 in words is "four hundred one million, four hundred twenty-one thousand, five hundred fifty-two".